Infolinks 2014

bobcat excavator 220 S/N 15001 & Above service repair Manual

This is the COMPLETE official full factory service repair manual for the bobcat excavator 220 S/N 15001 & Above. All pages allow you to print it out in its entirety or just the pages you need!!Dwonload bobcat excavator 220 S/N 15001 & Above Service Repair Manual for PDF


  • safety instructions
  • serial number locations
  • delivery report
  • hydraulic excavator identification
  • preventive maintenance
  • hydraulic section
  • drive section
  • upper works & swing section
  • main frame & tracks
  • electrical system
  • engine service
  • technical data


HYDRAULIC FLOW CHART for model 220 Excavator (S/N 15001 & Above) PDF Download

The fluid flows by gravity from the reservoir 1 to the 3 section hydraulic gear pump 6 . The 3 section gear pumps are coupler driven from the engine. Each gear pump section is protected by a relief valve located in the control valve it supplies. Fluid from the hydraulic pump 6 (Engine flywheel end) is forced to the pressure reducing valve 17 and to the 6-spool hydraulic control valve 27 P1 port (Inlet). These control valve sections control R.H, travel. Boom and Bucket. Fluid from the center section hydraulic pump 6 is forced to the P2 port of the 6-spool hydraulic control valve 27 . These control valve sections control LH. travel. Arm and Auxiliary. Adjustable relief valves 28 29 are located at each end of the 6-spool hydraulic control valve 27 . With all spools in the neutral position the open center control valve allows fluid to flow to the oil cooler 35 . When a spool is activated, the fluid flows to the base or rod end of a cylinder 21 , 22 & 24 , The fluid on the other side of the cylinder flows back to the 6-spool hydraulic control valve 27 , When a cylinder reaches the end of the stroke the presjrp increases to 2450 PSI (16897 kPa) and opens the relief valve 28 or 29 , The oil then ftcws through the 6-spool hydraulic control valve 27 internally and back to the oil cooler 35 , The 6-spool hydraulic control valve has Port Relief Valves in both ports of the Boom section 30 & 31, the rod end of the Bucket section 32 and both ports of the Arm section 33 & 34. The auxiliary spool is hollow, and while in neutral, fluid flows through the center of the spool to the tank port of the valve. When the auxiliary spool is activated two pump flows are combined to supply more fluid to the auxiliary quick couplers 21 on the boom arm. The female coupler is pressure and the male coupler is return. The auxiliary fluid return flows through the 6-spoof hydraulic control valve 27 internally and back to the oil cooler 35 . Fluid from the end cap section of the hydraulic pump 6 flows to the inlet port PI of the 3-spool control 20 , Oil under pressure because of the buildup valve 0 is also directed to the joystick manifold 17 at 200 PSl (1379 kPa) to charge the accumulator 14 – The accumulator stores fluid under pressure 200 PSl (1379 kPa) to operate a joystick function if the engine stops, The console lock-out microswitch is located in the left console of all excavators. If the excavator is equipped with the ROPS Canopy, and addition microswitch is used in the right console to lock-out the fluid flow to the joysticks if the right console is raised to access the operators area. When the console(s) is lowered, the microswitch activates the joystick supply solenoid valve 16 and fluid is allowed to flow to the joysticks 18 and 19 .


Caterpillar Crawler Bulldozer T lines to meet customer demand strong

Whether it is a large job or small job, whether it is mining or finishing work, you need a high efficiency bulldozer products, today repar-guidebook.com ‘s Author recommended that Caterpillar bulldozer products. Caterpillar crawler tractors, including a full range of small, medium and large track-type tractors, engine power ranging from 55kw-695kw, here we do not say a product, we focus summarized 259KW-695KW four models of bulldozers.
CATC series engine

The bulldozers engine used for four-stroke, water-cooled, mechanically actuated electronically controlled direct injection (MEUI) diesel engine fuel system, the speed of the full net power generated when 1800rpm, to handle the hardest materials. With the high-efficiency torque divider and electronically controlled power shift transmission with the use of the machine can ensure long-term reliable operation.

Engine with ADEMA4 electronic control module manages fuel delivery and airflow, so per liter (gallon) of fuel used to play the greatest effect. It provides flexible fuel mapping, ensure rapid response of the engine for different job requirements.

Engine Fuel System for Mechanical Electronic Unit Injector fuel system, by using multiple injection fuel delivery, lower combustion chamber temperatures, emissions reduction, and obtain optimal combustion efficiency. This fuel system is achieved by MEUI (mechanically controlled unit injector), both to ensure the accuracy of the system’s electronic control system, but also has a mechanically controlled unit injectors simplicity, achieve the proper balance, the result is more productivity high, lower fuel consumption.

Cooling the engine intake manifold provides air-cooled compressed air, thereby reducing emissions and maximize fuel efficiency. Two single overhead cam driven by the engine flywheel gear. Cam gear at the flywheel end significantly reduces noise and vibration. To reduce wear, at the front end of the camshaft installed two dangling shock absorbers. These features help extend engine life, enhanced durability. By monitoring key functions and logging critical indicators, Cat Electronic Technician can perform electronic diagnostic repair, maintenance and repair to make more.

Cooling System

The use of advanced dual modular cooling system with sufficient cooling capacity to ensure that the engine is always in good working condition, prolong engine life.

Torque divider

Efficiency torque divider with a fixed stator can achieve very high torque multiplication while shielding effects of sudden torque shocks and vibration of the drive train.

Planetary transmission, power shift transmission with large diameter, high capacity, oil-cooled clutches, to ensure reliable performance.
Elevated Design
Elevated final drives designed to protect the engine away from the ground and avoid shock loads. Elevated sprocket undercarriage design ensures optimum machine balance, excellent performance and the longest component life. Full floating chassis design, crawler can better adapt to the ground conditions.

Transmission Parts

Reliable transmission components, to achieve a modular design, modular gearbox and differential can be slid into the rear of the chassis, even if you have installed ripper also still be able to easily repair. Can be achieved without removing the cab can be demolished planetary gearbox, with excellent maintenance performance.


Caterpillar unique design of the positive pin retention (PPR) type pre-sealed and lubricated track, suitable for high impact and high load.


Equipped with automatic control of heating and air conditioning overturned, FOPS cab; equipped with comfortable adjustable suspension seat, greatly reducing operator fatigue strength.

Working Device
Working device using oblique rod support structure, which makes the blade closer to the machine, so it can more accurately dozing and load control. Using pin connector design, the higher the side of stability, better cylinder positions for constant power, regardless of the blade height.
Caterpillar bulldozer mainly applied to one to three short dug shallow soil movement, such as site clearance or leveling, excavation depth of excavation and backfill little push to build small embankment height, etc., is also applicable to a variety of adverse ground conditions in various emergency disaster relief, for road reopened, for risk rescue, and play a role in a variety of construction projects.

bobcat Service Repair Manual 425 Compact Excavator pdf download S/N A1HW11001 & Above and TROUBLESHOOTING

Complete service repair manual for bobcat  425 Compact Excavator. This is the same type of service manual your local dealer will use when doing a repair for your bobcat  425 Compact Excavator. Comes with highly detailed illustrations and step by step instructions.

This highly detailed digital repair manual contains everything you will ever need to repair, maintain, rebuild, refurbish or restore your bobcat 425 Compact Excavator.


  • HYDRAULIC SYSTEM . . 20-01
  • UNDERCARRIAGE. . 30-01
  • ENGINE SERVICE . . 60-01
  • HEATER . 70-01

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Bobcat ZX 75 Repair Service Manual Download and Troubleshooting repair guide

This Bobcat ZX 75 Repair Service manual is for the Ingersoll RandHydraulic Excavator mechanic. It provides necessary servicing and adjustment procedures for the hydraulic excavator and its component parts and systems. Refer to the Operation & Maintenance Manual for operating instructions, starting procedure, daily checks, etc.


  • Safety & maintenance
  • Hydraulic system
  • Undercarriage
  • upperstructure & swing section
  • Electrical system and analysis
  • engine service
  • HVAC
  • Specifications

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cessna aircraft company mooel 421 service manual and T303 310 335 340 401 402 404 411 414 airplane flight manual supplement

Complete service  manual for cessna aircraft company mooel 421 . Comes with comprehensive details regarding technical data, diagrams, a complete list of parts and pictures. Save money and enjoy fixing machines.Dwonload Service Repair Manual for cessna aircraft company  mooel 421 service manual and T303 310 335 340 401 402 404 411 414 airplane flight manual supplement.

models   serials
T303   T30300001 thru T30300315
310      310r1501 thru 310r2140
335      340a0601 thru 340a1817
340     340a0601 thru 401b0221
401     401-0001 thru 402c1020
404     402-0001 thru 404-0859
411     411-0001 thru 411a0300
414     414-0001 thru 414a1212
421     421-0001 thru 421c1807

These mooel 421 service manual  cover all these sections and more:

  • general
  • limitations
  • emergency procedures
  • normal procedures
  • performance
  • weight balance /equipment list
  • airplane systems descriptions
  • airplane handling,service maintenance
  • supplements
  • alphabetical index


2001 Polaris Sportsman 400-500 DUSE & H.O. Troubleshooting repair guide

Engine Turn Over But Fail to Start
No fuel
Dirt in fuel line or filter
Fuel will not pas through fuel valve
Fuel pump inoperative/restricted
Tank vent plugged
Carb starter circuit
Engine flooded
Low compression (high cylinder leakage)
No spark (Spark plug fouled)
Engine Doe Not Turn Over
Dead battery
Starter motor doe not turn
Engine seized, rusted, or mechanical failure
Engine Run But Will Not Idle
Restricted carburetor pilot system
Carburetor misadjusted
Choke not adjusted properly
Low compression
Crankcase breather restricted
Engine Idle But Will Not Rev Up
Spark plug fouled/weak spark
Broken throttle cable
Obstruction in air intake
Air box removed (reinstall all intake components)
Incorrect or restricted carburetor jetting
ETC switch limiting speed
Reverse speed limiter limiting speed
Carburetor vacuum slide sticking/diaphragm damaged
Incorrect ignition timing
Restricted exhaust system
Engine Ha Low Power
Spark plug fouled
Cylinder, piston, ring, or valve wear or damage (check compression)
PVT not operating properly
Restricted exhaust muffler
Carburetor vacuum slide sticking/diaphragm damaged
Dirty carburetor
Piston Failure – Scoring
Lack of lubrication
Dirt entering engine through crack in air filter or ducts
Engine oil dirty or contaminated

Excessive Smoke and Carbon Buildup
Excessive piston-to-cylinder clearance
Wet sumping
Worn rings, piston, or cylinder
Worn valve guide or seals
Restricted breather
Air filter dirty or contaminated
Low Compression
Decompressor stuck
Cylinder head gasket leak
No valve clearance or incorrectly adjusted
Cylinder or piston worn
Piston ring worn, leaking, broken, or sticking
Bent valve or stuck valve
Valve spring broken or weak
Valve not seating properly (bent or carbon accumulated on sealing surface)
Rocker arm sticking
ETC or speed limiter system malfunction
Fouled spark plug or incorrect plug or plug gap
Carburetion faulty – lean condition
Exhaust system air leaks
Ignition system faulty:
Spark plug cap cracked/broken
Ignition coil faulty
Ignition or kill switch circuit faulty
Ignition timing incorrect
Sheared flywheel key
Poor connection in ignition system
System wiring wet
Valve sticking
Air leak in intake
Lean condition

Low coolant level
Air in cooling system
Wrong type of coolant
Faulty pressure cap or system leaks
Restricted system (mud or debri in radiator fin or restriction to air flow, passage blocked in
radiator, lines, pump, or water jacket)
Lean mixture (restricted jets, vents, fuel pump or fuel valve)
Fuel pump output weak
Restricted radiator (internally or cooling fins)
Water pump failure
Cooling system restriction
Cooling fan inoperative or turning too slowly (perform current draw test)
Ignition timing misadjusted
Low oil level
Spark plug incorrect heat range
Faulty hot light circuit
Thermostat stuck closed or not opening completely
Temperature Too Low
Thermostat stuck open
Leak at Water Pump Weep Hole
Faulty water pump mechanical seal (coolant leak)
Faulty pump shaft oil seal (oil leak)

Fuel Starvation/Lean Mixture
Symptoms: Hard start or no start, bog, backfire, popping through intake / exhaust, hesitation, detonation, low
power, spark plug erosion, engine run hot, surging, high idle, idle speed erratic.
No fuel in tank
Restricted tank vent, or routed improperly
Fuel line or fuel valve restricted
Fuel filter plugged
Carburetor vent line(s) restricted
Plugged or restricted inlet needle and seat screen or inlet passage
Clogged jet or passages
Float stuck, holding inlet needle closed or inlet needle stuck
Float level too low
Fuel pump inoperative
Air leak at impulse line
Restricted impulse line (kinked, pinched)
Intake air leak (throttle shaft, intake ducts, airbox or air cleaner cover)
Ruptured vacuum slide diaphragm, Vacuum slide stuck closed or sticky
Improper spring
Jet needle position incorrect
Incorrect pilot screw adjustment
Rich Mixture
Symptoms: Foul spark plugs, black, sooty exhaust smoke, rough idle, poor fuel economy, engine run rough/
misses, poor performance, bog, engine load up, backfire.
Air intake restricted (inspect intake duct)
Air filter dirty/plugged
Choke plunger sticking, incorrectly adjusted choke
Choke cable binding or improperly routed
Incorrect pilot air/fuel screw adjustment
Faulty inlet needle and seat
Faulty inlet needle seat O-Ring
Float level too high
Poor fuel quality (old fuel)
Loose jets
Worn jet needle/needle jet or other carburetor parts
Dirty carburetor (air bleed passage or jets)
Weak or damaged vacuum piston return spring
Fouled spark plug
Poor Idle
Symptoms: Idle too high.
Idle adjusted improperly/idle mixture screw damaged
Sticky vacuum slide
Throttle cable sticking, improperly adjusted, routed incorrectly
Choke cable sticking, improperly adjusted, routed incorrectly

Idle Too Low
Choke cable bending or incorrectly adjusted
Idle speed set incorrectly
Idle mixture screw misadjusted or damaged
Belt dragging
Ignition timing incorrect
Worn jet needle/needle jet
Erratic Idle
Choke cable bending or incorrectly adjusted
Throttle cable incorrectly adjusted
Air leaks, dirty carburetor passage (pilot circuit)
Pilot mixture screw damaged or adjusted incorrectly
Tight valves
Ignition timing incorrect
Belt dragging
Dirty air cleaner
Engine worn
Spark plug fouled
Idle speed set incorrectly (speed limiter)
Worn jet needle/needle jet


Check the following item when shifting difficulty i encountered.
Idle speed adjustment
Transmission oil type/quality
Transmission torque stop adjustment
Engine torque stop adjustment
Drive belt deflection
Loose fastener on rod ends
Loose fastener on selector box
Worn rod ends, clevi pins, or pivot arm bushings
Linkage rod adjustment and rod end positioning
Shift selector rail travel
*Worn, broken or damaged internal transmission components


Brake Squeal
Dirty/contaminated friction pads
Improper alignment
Worn disc
Worn disc splines
Poor Brake Performance
Air in system
Water in system (brake fluid contaminated)
Caliper/disc misaligned
Caliper dirty or damaged
Brake line damaged or lining ruptured
Worn disc and/or friction pads
Incorrectly adjusted lever
Incorrectly adjusted stationary pad
Worn or damaged master cylinder or components
Improper clearance between lever and switch
Lever Vibration
Disc damaged
Disc worn (runout or thicknes variance exceed service limit)
Caliper Overheat (Brake Drag)
Compensating port plugged
Pad clearance set incorrectly
Auxiliary brake pedal incorrectly adjusted
Brake lever or pedal binding or unable to return fully
Parking brake left on
Residue build up under caliper seals
Operator riding brakes
Brake Lock
Alignment of caliper to disc.


No Spark, Weak or Intermittent Spark
Spark plug gap incorrect
Fouled spark plug
Faulty spark plug cap or poor connection to high tension lead
Related wiring loose, disconnected, shorted, or corroded
Engine Stop switch or ignition switch faulty
ETC switch misadjusted or faulty
Terminal board or connection wet, corroded
Poor ignition coil ground (e.g. coil mount loose or corroded)
Faulty stator (measure resistance of all ignition related windings)
Incorrect wiring (inspect color coding in connector etc)
Faulty ignition coil winding (measure resistance of primary and secondary)
Worn magneto (RH) end Crankshaft bearings
Sheared flywheel key
Flywheel loose or damaged
Trigger coil air gap too wide (where applicable) – should be .016-.040″ (.4-1.0 mm)
Excessive crankshaft runout on magneto (RH) end – should not exceed .0024″
Faulty CDI module


tarter Motor Doe Not Turn
Battery discharged – low specific gravity
Loose or faulty battery cable or corroded connection (see Voltage Drop Tests)
Related wiring loose, disconnected, or corroded
Poor ground connection at battery cable, starter motor or starter solenoid (see Voltage Drop
Faulty starter button
Faulty ignition switch (Do other system function?)
Faulty starter solenoid or starter motor.
Engine problem – seized or binding (Can engine be rotated easily with recoil starter?)
tarter Motor Turn Over Slowly
Battery discharged – low specific gravity
Excessive circuit resistance – poor connection (see Voltage Drop Test below)
Engine problem – seized or binding (Can engine be rotated easily with recoil starter?)
Faulty or worn brushe in starter motor
Automatic compression release inoperative
tarter Motor Turn – Engine Doe Not Rotate
Faulty starter drive
Faulty starter drive gear or starter motor gear
Faulty flywheel gear or loose flywheel