Fiero L4-151 2.5L (1985)
20.
Retaining bolts from left side front suspension support (6).
21.
Drain engine oil (remove oil filter).
22.
Lower vehicle.
IMPORTANT:
COVER OIL PAN OPENING WITH RAGS TO PREVENT CHIPS FROM FALLING INTO PAN.
23.
Transaxle mount thru bolt.
24.
Lower engine/transaxle assembly with engine support fixture.
25.
Raise vehicle.
26.
Timing gear cover - do not distort.
Clean
-
Timing gear cover and engine sealing surfaces.
27.
Align crankshaft/camshaft timing marks on gears.
28.
Drill and tap hole on the camshaft centerline (8 mm drill, 1/2 inch deep).
CAUTION: WEAR SAFETY GLASSES TO AVOID EYE DAMAGE.
USE CARE WHEN DRILLING AND TAPPING CAM GEAR TO AVOID DAMAGE TO THE CAMSHAFT.
IMPORTANT:
COVER OIL PAN OPENING WITH RAGS TO PREVENT CHIPS FROM FALLING INTO PAN.
29.
Tap the 8 mm hole with a 3/8-16-NC bottoming tap.
IMPORTANT:
AVOID BUILD-UP OF CHIPS. BACK OUT THE TAP EVERY FEW TURNS AND REMOVE CHIPS.
30.
Center punch and drill (2) 3 mm pilot holes in the metal hub of the cam gear (180 degrees apart).
IMPORTANT:
USE CARE TO AVOID DRILL WANDER THAT COULD DAMAGE CAMSHAFT.
31.
Enlarge pilot holes with 5.5 mm drill; 1/4 inch deep.
32.
Tap 5.5 mm holes with 1/4-28-NF bottoming tap.
33.
Drill a hole no larger than 1 mm. (.040 in.) in the front oil gallery plug. This provides improved lubrication to the timing gears.
Clean
-
Oil pan of debris.
34.
Cam gear with J24420-B - do not move cam or crank.
Inspect
-
Thrust plate for scuffing and/or grooving. If evident, install new thrust plate, spacer ring, and key. Thrust plate-to-block bolts torque - 10
N-m (90 in.lb.).
IMPORTANT:
LUBRICATE FRONT THRUST PLATE SURFACE WITH CLEAN ENGINE OIL.
Install or Connect
1.
Cam gear using J25033-B - align timing marks.
Measure
-
Camshaft end play using dial indicator - J8001 or equivalent.
Push cam gear onto camshaft until camshaft until camshaft end play is in the range of .0015 in. to .0050 in. (.04 mm to .13 mm).
2.
Front cover seal using J34995 - lubricate seal lip with clean engine oil.
3.
Apply RTV sealant to timing gear cover sealing surfaces.
4.
Timing gear cover to engine.
5.
Lower vehicle.
6.
Raise engine assembly with support fixture.
7.
Thru bolt in rear transaxle mount.
8.
Retaining bolts (2) in front engine mount.
9.
Raise vehicle.
10.
Retaining nuts (2) and thru bolts (2) in right front engine mount.
