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Master
11,896 Answers
- Posted on Jan 21, 2009
Re: How install timing belt 1993 1.8l eclipse
See Figures 1, 2 and 3
- If possible, position the engine so the No. 1 piston is at TDC.
- Disconnect the negative battery cable.
- Remove the timing belt covers.
- Remove the timing (outer) belt tensioner and remove the outer timing belt.
- Remove the outer crankshaft sprocket and flange.
- Remove the silent shaft (inner) belt tensioner and remove the belt.
Fig. 1: Silent shaft belt timing marks-1.8L engine
Fig. 2: Checking the silent shafts for proper positioningFig. 3: Timing belt timing mark alignment-1.8L engineTo install:
- Align
the timing marks of the silent shaft sprockets and the crankshaft
sprocket with the timing marks on the front case. Wrap the timing belt
around the sprockets so there is no slack in the upper span of the belt
and the timing marks are still aligned.
- Install the tensioner pulley and move the pulley by hand so the long side of the belt deflects about 1/4in.
- Hold
the pulley tightly so the pulley cannot rotate when the bolt is
tigthened. Tighten the bolt to 15 ft. lbs. (20 Nm) and recheck the
deflection amount.
- Install the timing belt tensioner fully
toward the water pump and tighten the bolts. Place the upper end of the
spring against the water pump body.
- Align the timing marks of
the camshaft, crankshaft and oil pump sprockets with their
corresponding marks on the front case or rear cover.
There
is a possibility to align all timing marks and have the oil pump
sprocket and silent shaft out of time, causing an engine vibration
during operation. If the following step is not followed exactly, there
is a 50 percent chance that the silent shaft alignment will be 180
degrees off.
- Before installing the
timing belt, ensure that the left side (rear) silent shaft (oil pump
sprocket) is in the correct position as follows:
- Remove the plug from the rear side of the block and insert a tool with shaft diameter of 0.31 in. (8mm) into the hole.
- With
the timing marks still aligned, the shaft of the tool must be able to
go in at least 2 1/2 in. If the tool can only go in about 1 in., the
shaft is not in the correct orientation and will cause a vibration
during engine operation. Remove the tool from the hole and turn the oil
pump sprocket 1 complete revolution. Realign the timing marks and
insert the tool. The shaft of the tool must go in at least 2 1/3 in.
- Recheck and realign the timing mark.
- Leave the tool in place to hold the silent shaft while continuing.
- Install
the belt to the crankshaft sprocket, oil pump sprocket, then camshaft
sprocket, in that order. While doing so, make sure there is no slack
between the sprocket except where the tensioner is installed.
- Recheck
the timing marks' alignment. If all are aligned, loosen the tensioner
mounting bolt and allow the tensioner to apply tension to the belt.
- Remove
the tool that is holding the silent shaft and rotate the crankshaft a
distance equal to 2 teeth on the camshaft sprocket. This will allow the
tensioner to automatically apply the proper tension on the belt. Do not
manually overtigthen the belt or it will howl.
- Tigthen the lower mounting bolt first, then the upper spacer bolt.
- To verify correct belt tension, check that the deflection at the longest span of the belt is about 1/2in.
- Install the timing belt covers and all related items.
- Connect the negative battery cable.
you need a how-to instructions ... or you don't know the proper routing of the belt ?
Robert
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