20. LUBRICATION GUIDE ([fig. 10]).
a. General. Lubrication instructions for this materiel are consolidated in a Lubrication Guide ([fig. 10]). These specify the points to be lubricated, the periods of lubrication, and the lubricant to be used. Intervals indicated on the guide are for normal service. For extreme conditions, high speed, heat, mud, snow, rough roads, dust, etc., change engine oil and lubricate more frequently. In addition to the items on the guide, brake, gear shifter, clutch control linkage, and hinges must be lubricated at frequent intervals.
b. Supplies. In the field it may not be possible to supply a complete assortment of lubricants called for by the Lubrication Guide to meet the recommendations. It will be necessary to make the best use of those available, subject to inspection by the officer concerned, in consultation with responsible ordnance personnel.
c. Lubrication Notes. The following notes apply to the Lubrication Guide ([fig. 10]). All note references in the guide itself are to the steps below having the corresponding number:
(1) Brake Fittings. Exercise caution when lubricating brake operating cams and front brake cover bushing, as excess grease working out of these bearings is likely to get onto brake lining, reducing brake efficiency. CAUTION: When using air‐operated grease gun, make sure not to overlubricate brake fittings.
(2) Brake Hand Lever Oilcan Points. Oil hand lever fittings and “oiler” mounted on cable housing. Oil front brake control cable at ends of control cable housing.
(3) Generator Commutator End Bearing. Hand‐pack with general purpose grease, No. 2, at temperatures above zero. Below zero, use lighter grease. This operation requires removal of generator end cover. Bearing outer grease retainer must be loosened and swung aside for access to bearing. If not convenient to grease bearing at specified intervals, at least lubricate with a few drops of engine oil applied to hole in outer grease retainer. Do not overlubricate. CAUTION: Generator regulating brush plate must not be shifted while bearing outer grease retainer is loose (par. [92]). Generator drive end bearing requires no attention, since it is lubricated by oil circulating through engine.
| —— KEY —— | ||||||
|---|---|---|---|---|---|---|
| INTERVALS | ||||||
| LUBRICANTS | ¼ | — | 250 MILES | |||
| OE | — | OIL, ENGINE (CRANKCASE GRADE) | ½ | — | 500 MILES | |
| CG | — | GREASE, GENERAL PURPOSE | 1 | — | 1000 MILES | |
| No. 1 (ABOVE +32°) | 6 | — | 6000 MILES | |||
| No. 1 OR No. 0 (+32° TO +10°) | * L | — | SPECIAL LUBRICATION | |||
| No. 0 (BELOW +10°) | CHECK DAILY | |||||
| WB | — | GREASE, GENERAL PURPOSE (No. 2) | Air Cleaner | |||
| Engine Oil Tank | ||||||