I have an 89 geo spectrum 1.5 non turbo, broke timing belt--first what are the odds I didn't bend any valves, secondly having a difficult time getting the bottom crank pully off- even drilled a half inch hole through the frame, attached a breaker bar to it and it's not budging. Am I doing something wrong or do I just apply more torque to it? Mike
it is an iterfearence engine....it is very possable that you wrarped the valves..though i have seen the belts break and it not hurt anything..so you may get lucky
Although it may be possible to access the crankshaft damper/pulley while the engine is still in the vehicle, it may be exceedingly difficult. The manufacturer recommends that the engine be removed before attempting to replace components such as the timing belt or the crankshaft damper/gear. To remove these components, refer to the appropriate procedures later in this section.
Although timing belts may last for thousands of miles past the recommended replacement interval, they should be replaced every 60,000 miles to prevent trouble or damage should they snap. Timing belts do not usually give an indication that they are worn or aging without removing the cover(s) and inspecting the belt. A worn or damaged belt could give out at any time. In some cases, should a timing belt snap while the engine is running, damage could be done to the valve trains or pistons requiring a partial or full engine disassembly. Also, should the belt go when the vehicle is far from home, a costly tow or even more costly repair job and considerable inconvenience may be suffered.
Timing belts must always be handled carefully and kept completely free of dirt, grease, fluids and lubricants. This includes any accidental contact from spillage, fingerprints, rags, etc.. These same precautions apply to the pulleys and contact surfaces on which the belt rides.The belt must never be crimped, twisted or bent. Never use tools to pry or wedge the belt into place. Such actions will damage the structure of the belt and possibly cause breakage.
See Figures 1, 2 and 3
The engine must be removed from the vehicle for this procedure to be performed.
Inspect the timing belt for signs of cracking, abnormal wear and hardening. Never expose the belt to oil, sunlight or heat. Avoid excessive bending, twisting or stretching.
Once installed, there must be not slack in the timing belt. The belt teeth must be in perfect alignment with the gears.
Fig. Fig. 1: Timing belt routing - SOHC engines
Fig. Fig. 2: Align the crankshaft timing gear keyway with the mark in the oil pump - SOHC engines
Fig. Fig. 3: Check the timing belt tension at the center of the longest point between pulleys - SOHC engines
See Figures 4 and 5
It will be necessary to lower the engine using the support fixture for access to remove the crankshaft pulley.
Fig. Fig. 4: The camshaft pulleys' timing marks must be properly aligned before the timing belt is installed - DOHC engines
Fig. Fig. 5: Timing belt installation order - DOHC engines
owns a repair shop...25yrs