Engine Maintenance — Valve Clearance Adjustment (Cont'd) / Drive Belt Check (CD)
MA-51spec tableCD17 and CD20 diesel engine specs; deflection columns distinguish CD17 vs CD20, and CD20 without P/S.
Valve Clearance Adjustment (Cont'd)
- 4Install selected shim to valve lifter.
SMA481A
Example (Unit: mm (in))
Specified clearance
Intake0.20 - 0.30 (0.008 - 0.012)
Exhaust0.40 - 0.50 (0.016 - 0.020)
Measured clearance
Intake0.32 (0.013)
Exhaust0.36 (0.014)
Difference
Intake0.02 - 0.12 (0.001 - 0.005) large
Exhaust0.04 - 0.14 (0.002 - 0.006) small
Thickness of plate that was used
Intake3.60 (0.142)
Exhaust3.55 (0.140)
Thickness of plate to be used
Intake3.65 or 3.70 (0.144 or 0.146)
Exhaust3.45 or 3.50 (0.136 or 0.138)
Set shim with numbered side down.
Refer to S.D.S. for service shims.
Drive Belt Check
WARNING
Inspect drive belt deflections when engine is cold. When engine is hot, check deflections at least 30 minutes after engine has been switched off.
Drive Belt Check
- 1Inspect belts for cracks, fraying, wear or oil adhesion. If necessary, replace with new ones.
SMA442C - 2Inspect drive belt deflections by pushing on the belt midway between pulleys.
- 3Adjust belt deflection if it exceeds the limit.
Belt deflection — Unit: mm (in)/98 N (10 kg, 22 lb)
New belt
Alternator8.5 - 10.5 (0.335 - 0.413)
A/C compressor9.5 - 11.5 (0.374 - 0.453)
P/S oil pump CD178.5 - 10.5 (0.335 - 0.413)
P/S oil pump CD204 - 6 (0.16 - 0.24)
Water pump CD20 without P/S6 (0.24)
Used belt
Alternator10.5 - 12.5 (0.413 - 0.492)
A/C compressor11.5 - 13.5 (0.453 - 0.531)
P/S oil pump CD1710.5 - 12.5 (0.413 - 0.492)
P/S oil pump CD205 - 7 (0.20 - 0.28)
Water pump CD20 without P/S8 (0.31)
Limit
Alternator17 (0.67)
A/C compressor17 (0.67)
P/S oil pump CD1714 (0.55)
P/S oil pump CD208 (0.31)
Water pump CD20 without P/S—
See also
S.D.S.