1999/11/15 Caterpillar


Hardened Shims In The Lift And Tilt Relief Valves Prevent Pressure Loss {5117}

Usage:


D11N (74Z, 4HK),
D11R (8ZR, 9TR, 9XR) Track-Type Tractors;
992G (7HR),
854G (1JW) Wheel Loaders

Description of Change: New hardened shims replace the former shim on the lift and tilt relief valve in the Implement Control Valve. Excessive wear and distress of the former mild steel shims could cause pressure setting change and the need to re-adjust the pressure setting. The hardened shims resist wear that can cause loss of system pressure.

The new 152-5559 Shim, 152-5625 Shim, and 152-7041 Shim replace the former 4W-5723 Filter Retainer, 3J-7473 Shim, and 3H-2549 Shim in the 9T-8776, 124-6990, and 127-1604 Control Valves.

Refer to the following table and illustrations for usage of the new shims.


Typical of 9T-8776, 124-6990, and 127-1604

View A-A: Tilt Relief Valve.
View B-B: Lift Relief Valve.


Shim Location.

(1) 152-5559 Shim,
(2) 152-5625 or 152-7041 Shim,
(3) 9T-5734 Spacer.

(1) The 9T-5734 Spacer must be installed contacting the spring.

Caterpillar Information System:

1999/11/15 Final Drive Duo-Cone Seals {4050}
1999/11/08 Download Flash Files By Using The Caterpillar Service Information System (SIS) Or SIS Web {1901,1920}
1999/11/08 Correction To SEBU7140, 545 Wheel Skidder, Operation And Maintenance Manual {0374,0375,3278,4011}
1999/11/08 Improved Ripper Lines Available {5352,5356}
1999/11/08 New Cover Prevents Wear In Bevel Gear Group {3258}
1999/11/08 Drive Shaft Now Used {3253}
1999/11/01 138-8440 Component Cleaner May Damage Electrical Connectors {0644}
1999/11/01 Improved Corrosion Protection For Reman Major Components {3100,3150,4059}
1999/11/01 Improved Hydraulic Line For Pilot Control Increases Service Life {5057}
1999/11/01 New ROPS Canopy Has Higher Gross Machine Weight Certification {7323}
1999/11/01 Schematic Available For 994D Wheel Loaders {7601,7566}
1999/11/01 Customer Site License And Annual Subscriptions For VIMSpc99 Software Available {7601}
1999/11/15 Engine Oil Scavenge Pumps Use New Hardened Shaft Assemblies {1312}
1999/11/15 Piston Pump Swashplate Stop Retained With Dowel Pin {5070}
1999/11/15 High Temperature Engine Coolant Requires New Air Compressor Lines {1803}
1999/11/15 Correction To Schematic, Electrical System, 950G And 962G Wheel Loaders, IT62G Integrated Toolcarriers, SENR1393-01 {0374,7566}
1999/11/15 New High Strength Piston Bolts For Threaded Gland Cylinders {5101,5102,5104,5106}
1999/11/22 New Resolver Valve Has Backup Ring To Prevent Seal Extrusion {5051}
1999/11/22 Additional Gussets Added To The Bulldozer Blade Of Power Angle And Tilt Arrangement {6060}
1999/11/22 New Procedure For Installing Spring Pin Into Planet Carrier For Reverse Gear {3160}
1999/11/22 New Hydraulic Control Valve Used {3167}
1999/11/22 New Axle Oil Dipstick Used With New Axle Oil Level {3260}
1999/11/22 Improved Exhaust Pipe Bracket Available {1061,7251}
1999/11/22 Cylinder Head Bolt Re-torque Not Necessary For 3003, 3013, 3014, And 3024 Engines (All Applications) {1100}
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