1981/04/13 Caterpillar

Correct Installation Of Seal Spacer In Gear-Type Hydraulic Pumps{5073}

Usage:

All Hydraulic Implement Pumps (Gear Type) Used In Caterpillar Products

When a hydraulic implement pump is assembled, the plastic spacer ring used between the shaft seals must be installed correctly (see the illustration). The plastic spacer has a weep hole in it. If there is a restriction over the weep hole, hydraulic oil will transfer (leak) into the pump drive compartment. If the hydraulic oil is a fire resistant fluid (water glycol) and the pump drive is common to the engine oil sump, damage to an engine can result because of the mixture of water glycol and engine oil.

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NOTICE

Assemble both seals with sealing lip towards the pump. Assemble the spacer ring between the shaft seals with the small outside diameter against the steel case of the inner seal. The large outside diameter of the ring should be toward the lip of the outer seal.

Correct installation of plastic seal spacer in hydraulic implement pump (gear type).

Caterpillar Information System:

1981/04/13 FT1585 Plate Can Be Fabricated For Governor Spring Guide Replacement{0626}

1981/04/13 Check Operation Of Hydramechanical Shutoff At Specific Intervals{7418,7525}

1981/04/13 New Ahead Main Shaft Assembly Gives A Tighter Fit; Dimensions For The Fit Of Shafts And Gears{3300}

1981/04/13 Use Two Wrenches On Fuel Line Nuts{1254,1252}

1981/04/13 New 6V3060 EGR System Tester Group Available{1080}

1981/04/13 Use 6V4058 Universal Extension To Remove And Install Starter Bolts{0612}

1981/04/06 Improve Use Of Engine Service Manual Microfiche{0374}

1981/04/06 New Piston Ring Assemblies Give Improved Ring And Cylinder Liner Life{1215,1213}

1981/04/06 Correct Refill Capacity For Engine Oil{1318}

1981/04/06 Cooling System Cleaner Removes Rust And Corrosion{1350,1353,1354}

1981/04/06 Use Heat-Indication Products To Measure Parts Temperatures{0651}

1981/04/06 New Temperature Range Recommendation For Multi-Viscosity Oil In Power Shift Transmissions{3179,3155,3159}

1981/04/20 Different Check Valve Gives Faster Shifts{3313}

1981/04/20 Storage Compartments For Maintenance (Lubrication And Maintenance) Guides{7312}

1981/04/20 6V4020 Piston Ring Expander Group Available{0622,1215,1214}

1981/04/20 Use 6V4173 Clamping Bar Group On Hydraulic Hose Press{0624}

1981/04/20 Stronger Fitting Used With Sending Unit For Oil Pressure Gauge{7457,7451,3310,3314}

1981/04/27 Use 6V4089 Reamer Assembly To Clean Nozzle Bores{0622}

1981/04/27 Replacement Thermostat, Element Assemblies Available For Jacket Water Heater{1383}

1981/04/27 Fuel Injection Test Bench Specification Sheets Changed{0652}

1981/04/27 Special Instruction Available For The Use Of The 6V4040 Nitrogen Tire Inflation Group{4203,0374}

1981/05/04 Larger Valve Springs{1108,1101,1252}

1981/05/04 Automatic Shut-Off Systems Not Recommended on Mobile Earthmoving Equipment{7418,7403}

1981/05/04 Crankshaft Failures; New Thrust Plate{1203,1202,1230}