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ENGINE AND PUMP ASSEMBLY HYDRAULIC PUMP ASSEMBLY REPAIR - Continued
ENGINE AND PUMP ASSEMBLY HYDRAULIC PUMP ASSEMBLY REPAIR - Continued

Operator Manual Pesticide Dispersal Unit, Multicapability, Helicopter Slung
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TM 5-3740-218-13&P
NOTE
Note direction of lip to aid in installation of new lip seal.
(14) Remove lip seal (13) from front plate (3). Discard lip seal.
(15) Separate body (4) from back plate (5) and remove and discard O-ring (14).
C. INSPECTION
(1)
Inspect drive gear shaft for broken keyway.
(2)
Measure diameter of shafts. If shafts measure less than 0.5605 in. (1.4237 cm), replace pump (para 4-27).
(3)
Measure dimension A for scoring and wear. If wear is more than 0.535 in., replace pump (para 4-27).
(4)
Measure inside dimension of bearings in front (3) and back (5) plates. If measurement exceeds 0.5655 in.
(1.4364 cm), replace pump (para 4-27).
(5)
Inspect face of back plate (5) for scoring. If wear exceeds 0.0015 in. (0.0038 cm), replace pump (para 4-27).
(6)
Measure inside dimension of gear pockets. If measurement exceeds 1.404 in. (3.566 cm), replace pump (para
4-27).
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