Hla; A/C Belt - Mazda MX-5 1990 Workshop Manual

ENGINE TUNE-UP PROCEDURE
B
LOCKNUT
05UOBX-015
HLA
Problem
1. Tappet noise occurs when engine
started immediately after engine oil
replacement
2. Tappet noise occurs when engine
started after setting more than one
day
3.
Tap~et
noise occurs when engine
started after cranking by starter more
than three seconds
4. Tappet noise occurs when engine
started after HLA replaced
5. Tappet noise continues more than ten
minutes
6. Tappet noise occurs at idle after high-
speed driving
(3) Ale belt
If necessary, loosen the locknut and adjust the belt
deflection by turning the adjusting bolt.
Tightening torque:
37-52
N·m
(3.8-5.3
m-kg,
27-38
ft-Ib)
Possible Cause
Remedy
Tappet noise should dissipate from within
No oil in HLA
a few seconds to ten minutes
Low oil pressure Check oil pressure (Refer to Section D)
Defective HLA Inspect HLA (Refer to page 8-54)
Low oil level Add engine oil
Degenerated oil Replace engine oil
05UOBX-016
8-7