4-8. HYDRAULIC PUMP MAINTENANCE (CONT)
CLEANING, INSPECTION, AND REPAIR (SHEET 1 OF 2)
Dry cleaning solvent P-D-680 used to clean parts is toxic and flammable.
Wear protective goggles and gloves and use only in a well ventilated
area. Avoid contact with skin, eyes and clothes and dont breathe
vapors. Do not use near open flame or excessive heat and dont smoke
when using it. Failure to do so could cause serious injury. If you be-
come dizzy while using cleaning solvent, get fresh air and medical
If contact with skin or clothes is made, flush
with large amounts of water.
If contact with eyes is made, wash eyes
with water and get medical aid immediately.
Clean all parts using cleaning solvent
P-D-680. Allow to air dry. Dont use
cloths to dry parts.
Measure wear caused by gear teeth in gear
housings (9 and 24) using straight edge
and thickness gage as shown. Replace a
gear housing if wear exceeds 0.005 inch.
Measure thrust plate (4, 16, and 28)
thickness using micrometer. Replace a
thrust plate if thickness is less than
Gears (13 and 14) and gears (22 and
23) must be replaced as a set. If
gears (13 and 14) are replaced,
bearings (6 and 18) must also be
replaced. If gears (22 and 23) are
replaced, bearings (18 and 30) must
also be replaced.