4-37. TURBOCHARGER REPAIR (Cont)
Lubricate bearings (27 and 33) with engine oil.
Install inner retaining ring (31 ), bearing (33), bearing washer (32), and outer retaining ring
(31) in turbine end of center housing (2).
Install retaining ring (29), bearing washer (28), and bearing (27) in compressor end of center
If removed, install two pins (30) in compressor end of center housing (2). Pins must extend
0.075 to 0.085 inch above surface.
Install thrust washer (26) with hole and cutout in thrust washer in alinement with pins (30).
Install thrust washer with smooth side against center housing.
Lubricate thrust collar (25) and thrust washer (26) with engine oil. With center housing
assembly (2) laying flat on bench, compressor end up, place thrust collar snugly against
Install seal ring (22) in groove at compressor end of center housing (2).
Aline oil feed hole in center housing (2) and backplate assembly (5). Attach backplate to
center housing with four bolts (21 ) and four locking plates (20). Torque bolts to 13-15 Ib-ft
(18-20 N-m) and bend locking-plate tangs up against side of bolt head.
Do not cock or force piston ring (19) in groove. Ring is brittle and will snap easily.
Piston ring (19) is used only on some turbochargers. If there is no groove in shaft, ring
is not required.
(9) Install piston ring (19) on wheel shaft assembly (15).