Bolt Loosening On Lower Articulated Hitch Caterpillar

WHEEL TRACTORS

Reference: Service Manual Module, SENR5893, Disassembly & Assembly, 992G Wheel Loader, Machine Systems; Pages 239-255, "Separate Loader Frame & Rear Frame". This module is found in Service Manual, SENR1344, 992G Wheel Loader Volume II.

Problem:

The four 8T-7338 Bolts that hold the 4E-8159 Retainer Plate may loosen.

Solution:

Rework the 4E-8159 Retainer Plate by increasing the size of the four bolt holes and installing four new spacers and washers. The result is a joint that retains the pin but allows movement side to side between the frame and retainer plate. Use the following procedure to rework the 4E-8159 Retainer Plate.

NOTE: First production of the new lower articulated hitch design will begin April 1999.

Rework Procedure

Parts Needed

4 - 8G-5258 Spacers

4 - 8T-5439 Washers

1. Remove eight 8T-7338 Bolts (1) and 4E-8159 Retainer Plate (2) from the bottom of the lower hitch.

2. Enlarge four outer bolt holes (A) on the 4E-8159 Retainer Plate by drilling the holes to a diameter of 38 mm (1.5 in). This is the bolt pattern that mounts the plate to the frame.

3. Install 4E-8159 Retainer Plate (2) with four 8G-5258 Spacers (3) and four 8T-5439 Washers (4). Install the retainer plate with eight existing 8T-7338 Bolts (1).

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