1989 Isuzu Trooper • 4 cylinder 4WD Automatic • 120,000 miles
I have a 1989 izusu tropper 2.6l auto. i´ve alligned the timing to specs 12 degrees btdc 900rpm but still pinging
November 24, 2010.
November 24, 2010.
Inspection Handle timing belt carefully. Avoid twisting or kinking belt. DO NOT allow belt to become contaminated by water, oil, dirt or other contaminates. Inspect belt for cracks or damage. Replace, if necessary. On 2.0L engines, measure outside diameter of crankshaft, camshaft and oil pump sprockets. If specifications are exceeded, replace sprocket(s). See TIMING SPROCKET SPECIFICATIONS (2.0L) table. On all engines, measure tension pulley spring length and force. On 2.3L and 2.6L engine, spring length should not exceed 2.76" (70.2 mm) and spring force should not be less than 60-106 lbs. (27-48 kg). On 2.0L, spring length should not exceed 3.11" (79 mm), and spring force should not be less than 53-57 lbs. (24-26 kg). On all engines, replace tension pulley spring if not within specification. TIMING SPROCKET SPECIFICATIONS (2.0L) ApplicationStandard - In. (mm)Limit - In. (mm) Camshaft5.2025.198 (132.03)(131.93) Crankshaft2.5742.570 (65.33)(65.23) Oil Pump4.4854.481 (113.84)(113.74)
IMPORTANT:If distributor has been removed from cylinder head, install distributor with No. 4 cylinder at TDC of the compression stroke.
Pull tensioner fully toward water pump side, and temporarily tighten retaining bolt. Ensure No. 1 cylinder is at TDC on compression stroke by rotating crankshaft until keyway aligns with mark on front crankshaft seal housing (12 o'clock). Rotate camshaft until timing mark on cam gear (arrow) aligns with mark on upper camshaft cover (notch). See Fig. 1.
Position timing belt over crankshaft sprocket, oil pump sprocket, camshaft sprocket and tensioner in that order. Ensure belt is positioned in sequence given and without slack between sprockets. Loosen tensioner pulley adjusting bolt allowing spring tension to tighten belt. Tighten adjusting bolt temporarily.
Temporarily install crankshaft pulley bolt and rotate crankshaft 2 complete revolutions in opposite direction of engine rotation, until marks on crankshaft and front oil seal retainer are aligned again. See Fig. 1. Loosen tensioner lock bolt, allowing tensioner spring to fully adjust tension. Tighten tensioner lock bolt.
Install timing belt covers. To complete installation, reverse removal procedures. Tighten all bolts to specification. See TORQUE SPECIFICATIONS. Adjust drive belts to proper tension.
Fig. 3: Installing Belt Guide
Nov 25, 2010.
Nov 25, 2010.
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