2006/01/30 Caterpillar

Work Tool:

H45 / H45s (S/N: 6CZ1-UP)

H50 / H50s (S/N: 5MZ1-UP)

H55Ds (S/N: BWM1-UP)

H63 / H63s (S/N: 4GL1-UP)

H70 / H70s (S/N: 4KL1-UP)

H90 / H90s (S/N: 6TZ1-UP)

H100 / H100s (S/N: 4ML1-UP)

H115 (S/N: 4PL1-UP)

H120s / H120Cs (S/N: 9MM1-UP)

H130s (S/N: 7CM1-UP)

H140s (S/N: 4SL1-UP)

H140Cs (S/N: BED1-UP)

H140Ds (S/N: BXB1-UP)

H160s (S/N: 4TL1-UP)

H160Cs (S/N: BFB1-UP)

H160Ds (S/N: BXF1-UP)

H180s (S/N: 9PM1-UP)

Failure Modes

Illustration 1	g01235478
Typical example of the location for grease fittings

Illustration 2	g01235479
(1) Grease fitting with center ball (2) Grease fitting without center ball

Illustration 3	g01235486
Typical example of damaged grease fittings

Two common reasons that grease fitting fail: the grease fitting is not present, or the grease fitting's center ball had been expelled.

Note: Do not reuse old grease fittings. Old grease fittings have a higher probability of failure. Always replace grease fittings if the fitting is removed, or if the fitting is damaged.

Installation of New Grease Fittings

1. Clean grease from threaded part of the grease fitting's counterbore.

2. Clean old thread lock compound from the threads with solvent or wire brush.

3. Remove grease from the threads by using 169-5464 Quick Cure Primer .

4. Clean threads of the new grease fitting with water.

   Note: Water neutralizes the fitting's zinc coated surface. This is the recommended contact surface for locking compound.

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Illustration 4	g01235487

5. Apply 9S-3263 Thread Lock Compound on the threads.

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Illustration 5	g01235490

6. Install the new grease fitting and tighten according to the following specification:
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   Table 2

   Part Number	Description	Torque Specification
   3Q-7726	Grease Fitting	50 N·m (37 lb ft)
   3Q-7725	Hydraulic Fitting	20 N·m (15 lb ft)

   Note: The elapsed time for curing 9S-3263 Thread Lock Compound depends on the ambient temperature (approximately 24 hours).