TM 9-4940-556-14&P
LUBRICATION
4.4
4.4.1 Oil wrist cavity - Turn unit OFF. Using G090 fill cavity under
felt washer at the water pump connecting rod. Note that the connecting
rod has the word "OIL" cast into it with an arrow showing lubrication
point (ref. drawing JP7212).
4.4.2 Grease pillow block bearings. Turn unit OFF. Using grease,
automotive and artillery (GAA) lubricate using the zerk fitting on top
of each of the two (2) pillow blocks. DO NOT OVER GREASE.
4.5
MECHANICAL
4.5.1 Belt tension - belt condition.
4.5.1.1 Visually examine belts for signs of wear and/or dry rot. If
such evidence is found, belts should be replaced, retensioned and tension
checked every 8 hours till belt (s) run-in (approximately 32 hours of
If replacement is required, refer to 6.5.1.
operation).
4.5.1.2 With unit disconnected from electrical power, push pump belt
and jack shaft belt in turn, midway between the drive and driven pulleys.
Belt deflection should be 0.125 inch.
4.5.1.3 If belts require adjustment, loosen the two pump mounting bolts
(item a, drawing JP3245) and move pump to the right.
4.5.1.4 Loosen motor mounting bolts and slide to the left or right to
properly tension the Jack Shaft Belt. DO NOT OVERTIGHTEN BELT.
4.5.1.5 Tighten motor mounting bolts. Slide pump (rail) to left until
proper (water) pump belt tension is obtained. Tighten pump mounting bolts.
4.5.2 Hoses and fittings and clamps.
4.5.2.1 Visually examine all for signs of external wear, bubbles, or
discoloration.
4.5.2.2 With unit OFF and water system released, squeeze hoses to determine
if they are pliable (but not lifeless).
4.5.2.3 If any hose appears defective or shows signs of age during proced-
If not replaced serious
ures 4.5.2.1 and 4.5.2.2, it must be replaced.
injury or death may result. See 2.1.6 and 2.1.7.
4.5.2.4 Examine fittings and clamps for signs of damage and/or leakage.
Pay special attention to hose clamps. With unit OFF, tighten any fitting or
clamp which is loose or leaking. Cleaning hose clamps should be tightened
with machine running cold, bolts must be tightened only enough to stop
leaking, DO NOT TIGHTEN ENOUGH TO DAMAGE HOSE. If clamps or fittings are
determined to be defective, they must be replaced. If they are not, serious
injury or death may result.
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