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SUBARUPictures of how I Replaced the Timing Belt on the Subaru Legacy Outback 2.2 engine.


GOOD TO KNOW:

Crankshaft Pulley:
Big rusty pulley on front of crankshaft, outside of timing belt covers. This drives the a/c and alternator belts.
Crankshaft Sprocket:
A toothed sprocket located on the crank shaft, behind the Crank Pulley, which drives the timing belt.
Cam Shaft Sprockets:
Big sprockets, one on each cam shaft. They have twice as many teeth as the Crank Sprocket so the pistons will take 4 strokes for every 2 cycles of the cams.
Belt Idlers (2 smooth, one toothed bearing):
Bearings that direct the belt around corners.
Belt Tensioner (Bearing):
Spring loaded bearing that pushes on the belt.
Belt Tensioner Adjuster:
The pneumatic plunger that pushes on the Belt Tensioner and keeps it tight.


Changing the Timing Belt

I changed the Timing belt twice. Both times the real motivation was to fix several oil leaks. Freakin Subarus. The first time I took the whole engine out, the next time I left the engine in. The first time took a week or two, the second time took one day. I will show one procedure, with pictures from either mixed together just to confuse you.

But first, lets pay some bills:
  1. I took out the radiator to make some room to work.
    Radiator


  2. I covered the A/C condenser with cardboard to protect the fins.
    condenser


  3. At this point I either removed the engine, or not. Then I removed the covers over the alternator and condenser. I loosened the alternator and the P/S pump pulleys and removed the two belts.
    alternator covers


  4. With the engine in, I loosened the crank pulley bolt with a big ass wrench braced on the engine well, then just barely "blipped" the starter to pop it loose. Ass wrenches come in many sizes. I only have the big ass wrench and the medium ass wrench. The adjustable ass wrench is not any good.
    braced wrench


  5. With the engine out, I locked the flywheel in place by jamming a screwdriver through an inspection hole into the flywheel, then used a medium ass wrench and my super human strength.
    Flywheel     Pulley


  6. I removed crank pulley to expose crank sprocket. I removed side timing belt covers to expose cam sprockets.
    Remove some junk


  7. I removed the middle timing belt cover, and put the pulley back on to rotate the engine to line up timing marks.
    Guts


  8. With the engine out, I rebuilt the oil pump, replaced the water pump, bearings, tensioner, tensioner adjuster, and camshaft oil seals. With the engine in, I replaced the camshaft oil seals.
    Flywheel


  9. If I didn't replace the tensioner adjuster, I SLOWLY, over a period of a few hours, recompressed the adjuster in a vice.
    tensioner compression


  10. Then to hold it in the open position, I "fabricated" a new pin out of an office paper clip.


  11. There are the timing marks all ligned up. I aligned the timing marks on the sprockets to the marks on the back of the timing belt cover or engine.
    timing marks


  12. I put on the new belt and lined up the marks, then used clamps to keep them there. Give em the clamps! The clamps!
    timing marks clamped     timing marks clamped     timing marks clamped


  13. I installed the last pulley and the tensioner, released the tensioner adjuster, and there it is.
    installed


  14. I reinstalled the covers, and I tightened it up.
    Torque


  15. Then I finished my beer.
    Beer


Comments


Jeff wrote ( 9/10/2009 5:34:19 AM )


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