TM 5-3805-260-24BASIC BLOCKTM 5-3805-260-24OIL PUMPOIL PUMPCheck oil pump end clearance End clearance is .0027to .0053 in. (0.069 to 0.135 mm) new.CHECKING END CLEARANCE(Oil pump with plunger bypass shown)Remove oil pump cover mounting bolts (1). Removeoil pump corer (2).OIL PUMP(Oil pump with belleville washer bypass shown)1. Bolts (four). 2. Oil pump cover.Check oil pump rotor tip clearance. Rotor tipclearance is .004 .002 in. (0.10 0.05 mm). Maximumrotor tip clearance is .009 in. (0.23 mm).Remove outer rotor (5) and inner rotor (3). Check sizeof bearing (4). Size of bearing (4) is 2.8041 .0022 in.(71.224 0.056 mm). Replace bearing if necessary. Usean 8S2285 Driver (6) to install the bearing. For thecorrect location of bearing junction, see the topic OILPUMP in the SPECIFICATIONS.ROTORS REMOVED3. Inner rotor. 4. Bearing. 5. Outer rotor.INSTALLING BEARING6. 8S2285 Driver.Clean all parts thoroughly before installing. Oil allcomponent parts before installing. Install inner rotor (3),outer rotor (5), cover (2), mounting bolts (1) and locks.Tighten bolts to 18 5 lb. ft. (24 7 Nm) and securewith locks.3-385
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