Volvo Penta TAD1630G Workshop Manual page 123

Group 22
Disassembly
1
Clamp the turbine inlet flange and mark the relative positions
of the turbine housing, bearing housing, and compressor
cover.
2
Remove screws and clamp plates and the compressor cov-
er. Release the v-band clamp lock nut (62) and move the
clamp onto the bearing housing. Remove the bearing hous-
ing from the turbine housing (5). Remove the clamp.
3
Clamp a suitable 12 point socket wrench in the vise with the
socket axis vertical. Place the hub of the turbine wheel into
the socket. Release the compressor wheel locknut (61).
Note: Use a T-handle wrench together with a universal joint
to avoid side-loading the turbine wheel shaft.
Service procedures - intake and exhaust systems
4
Remove the compressor nut and pull the compressor wheel
(7) from the turbine's shaft. If the compressor wheel is stick-
ing it may be heated with a hot air pistol to max 130°C
(266°F).
5
Using circlip pliers, remove the large circlip (66).
WARNING! Extreme caution is required during re-
moval.
6
Slide out the insert (43). Remove the O-ring (32) and the oil
slinger (31).
7
Carefully withdraw the shaft and remove the piston ring (16).
Remove the oil deflector (33).
8
Remove the thrust bearing (12) and the thrust flange (36).
Using circlip pliers, remove the outer circlip (64) from the
compressor end. Carefully remove the bearing bushing (11)
and inner circlip (64).
9
Invert the bearing housing and remove the circlip (65) and
the heat shield (38). Using circlip pliers, remove the outer cir-
clip (66). Remove the oil control ring (37), bearing (11) and
inner circlip (64).
Assembly
Having cleaned and inspected all items and obtained re-
placement parts, where necessary, assembly can begin.
10
Fit a new piston ring to the shaft and wheel. Fit the inner cir-
clip (64), bearing (11), oil control ring (37) and outer circlip
(64). Fit the heat shield (38).
11
Invert the bearing housing and fit the inner circlip
121