Hoow to set up the timing belt
What do you mean by drive belt. If your talking about the serpentine
belt, it should have an auto tensioner. Same goes for the timing belt.
There is no adjustment. If the belt is loose then it needs to be
Replacing timing belt,Sienna 1998:
1.Disconnect battery (-) cable and plastic wiper washer cowl assembly
2.Remove spark plugs and put all wirings,cables out of the way
3.Drain coolant (cold) and remove upper hose
4.remove front right tire and wheel plastic fender apron
5.jack up engine under oil pan with rubber,towel or wood slightly
6.remove right engine support rod and its bracket
7.remove all drive belts.Examine condition;Label if re-using
8.remove plastic upper timing belt cover & gasket
9.remove crankshaft pulley bolt-use the ff. methods: a.air impact wrench or Toyota Special service tool-best b.chain wrench on pulley then breaker bar/socket on bolt-good c.open fly wheel cover,jam screwdriver on gear teeth then unbolt-tough d.breaker bar/socket on bolt, jam bar tip on floor, lower car then "start" engine -smart
10.remove pulley by hand or use carefully 2 prybars then remove plastic lower T.B.coverand gasket
11.reinstall bolt and turn engine clockwise to align timing marks:one on each camshaft sprocket and one on the crankshaft sprocket
12.remove T.B. tensioner spring-2 bolts loosen alternately then keep upright
13.remove crankshaft sprocket guard then the sprocket, then the belt.
14.Examine belt condition for damage and correct cause of damage if any
15.remove idler T.B.pulleys & check for smooth operation/contamination/leak
16.check all oil seals, water pump leaks,etc
17.Check T.B.tensioner spring for oil leak and tension by pressing push rod against hard object-there should be no movement or leak
18.Compress push rod using vise, align rod hole with outer hole then insert small nail, pin or wire to keep it there then reinstall along with other parts removed
19.Install T.B.carefully.No twist, stretch,prying ,oil, moisture, bending
20.Handturn engine 720 deg.clockwise, feel for resistance , and then see timing marks still re-align
21.Reinstall plastic covers and gaskets,drive belts.etc in reverse order 21.
Hope this helps.
Mar 02, 2011 |
1998 Toyota Sienna