4C20 Gasoline Engine Repair Manual
ÿ No. 4 bolt tightening torque: 10±1 N•m
(b) Apply enough engine oil lubrication to the ring
to oil leakage. It is forbidden to apply oil to the
ÿ On mating surfaces of bolt, pulley and bushing
ÿ No. 2 bolt tightening torque: 55±3 N•m
probe
ÿ Apply even pressure when installing the oil seal. The stuffing box should
move in the cover without distortions. It is forbidden to touch the working
edge of the stuffing box from
ÿ Tightening torque: 10±1 Nm
ÿ Stage 2: 150°
(b) Tighten the cover bolts to the cylinder block and cylinder head;
ÿ Tightening torque: 10±1 Nm
10. Replace front crankshaft oil seal
the tactile edge of the stuffing box.
hammer on the mandrel until it is flush with the timing case cover.
seal;
(a) Install the crankshaft pulley on the front crankshaft toe, tighten the pulley
mounting bolt, and check that the mating surfaces are firmly seated.
The shaft must be free of oil and grease.
ma (timing)
screwdrivers;
(a) Fix the soundproof cover of the timing case cover with
ÿ Tightening torque of No. 1 and 3 bolts: 22±2 N•m
for the possibility of scratching the edge, which can lead to
(a) Check the O-rings of the dipstick and dipstick tube for damage;
Advice:
(c) Tighten the bolts in sequence from the center bolts to the outer bolts.
Advice:
12. Install the oil dipstick and pipe
ÿ Stage 1. Tightening torque: 150±3 N•m.
(a) Insert the timing cover, install it on the locating pins (shown by the arrow
in the figure);
(b) Carefully install the new oil seal, knocking lightly
schyu one bolt with a gasket.
13. Install the crankshaft pulley
9. Install the timing cover
(a) Remove the crankshaft front oil seal using
11. Install the soundproof casing of the timing cover
(c) Tighten the two bolts and secure the oil dipstick.
100
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