seat Workshop Repair Guides

SEAT Workshop Service and Repair Manuals

Engine: assembly and dismantling > < Engine: Disassembling and assembling
Crankshaft - Components overview
Crankshaft - Components overview
t  Check the extension of the pin over the crankshaft → Fig.
t  Sender wheel: removing and fitting → Fig.
   
1 - Bearing shells 1, 2, and 4
q   For bearing cap without oil groove.
q   For cylinder block with oil groove.
q   Do not interchange used bearing shells (mark)
2 - 65 Nm + 90° (1/4 turn)
q   10 off
q   Renew
q   When measuring radial clearance, tighten to 65 Nm but do not turn further
3 - Bearing cap
q   Bearing cap 1: Pulley side:
q   Bearing cap 3 with rebates for the thrust washer
q   Fitting position: Bearing shell retaining lugs in cylinder block and bearing caps must align.
4 - Bearing shell 3
q   For bearing cap without oil groove.
q   For cylinder block with oil groove.
5 - Generator wheel:
q   For engine speed sender -G28-
q   Only engine code AMF, BNM, BNV
q   If this is damaged, replace it
q   Always renew sender wheel if bolts have been loosened
q   Removing and installing → Fig.
6 - 10 Nm + 90° (1/4 turn)
q   Renew
q   Only engine code AMF, BNM, BNV
7 - Locking pin
q   Check the extension of the pin over the crankshaft → Fig.
q   Only engine code AMF, BNM, BNV
8 - Crankshaft
q   New axial play: 0.07... 0.17 mm; Wear limit: 0.37 mm
q   Check radial clearance with Plastigage
q   New radial play: 0.03... 0.08 mm; Wear limit: 0.17 mm
q   Do not rotate crankshaft when checking radial clearance.
q   Crankshaft dimensions → Chapter
9 - Thrust washer
q   For cylinder block, bearing 3

   
Check the extension of the pin over the crankshaft
Special tools and workshop equipment required
t  Depth gauge
Checking sequence
–  Checking using the depth gauge, the extension -a- of the pin with the generator star -1- removed.
1 - Generator wheel:
2 - Bolt
3 - Pin extension -3- of the crankshaft a = 2.5...3.0 mm
  V13-1201
Sender wheel: removing and installing
–  Every time that the bolts loosen themselves -1- , it is usual to replace the generator wheel -2-.
  Note
  A13-0150
After a second assembly, the countersunk bolts holes are so deformed that the heads of the bolts -arrows- make contact with the crankshaft -3- and the sender wheel remains loose.
  A13-0150

Engine: assembly and dismantling > < Engine: Disassembling and assembling