Question about 1997 GMC Sierra

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Where is the rocker arm on K1500 GMC 5.7L - 1997 GMC Sierra

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What is the torque spec for rocker arm on 1994 gmc 5.7 liter,or how do you adjust them

Posted on May 06, 2013

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Posted on Jan 02, 2017

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SOURCE: rocker arm adjustment

Climers Moter manual has the drirections you need. You just turn the moter, untill both valves are closed. Turn the push rod as you tighten the rocker nut. When the puss rod quits turning, Give the nut on thr rocker on another half turn and your done. Only 15 more to do.

Posted on Jan 07, 2009

emissionwiz
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SOURCE: I have what seems to me a rocker arm

this is common on this engine don't worry about it. there is no adjustment, if u wish to try and get rid of it replace the lifters.

Posted on Aug 16, 2009

ftw1952
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SOURCE: whats the torque spec for rocker arms on a 1992

35 90 25

Posted on Jan 30, 2010

jturcotte
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SOURCE: Rocker arm torque specs on a 97 gmc jimmy 4.3

  1. For the 4.3L engines which are equipped with screw-in type rocker arm studs with positive stop shoulders, tighten the rocker arm adjusting nuts against the stop shoulders to 20 ft. lbs. (27 Nm) on 1994-96 models and 18 ft. lbs. (25 Nm) on 1997-99 models. No further adjustment is necessary, or possible.
  2. For most 4.3L engines which are not equipped with screw-in type rocker arm studs and positive stop shoulders, properly adjust the valve lash. For details on valve lash adjustment, please refer to the procedure in Routine Maintenance . (see below)
4.3L Engine

The 4.3L engines may be equipped with either of 2 rocker arm retaining systems. If your engine utilizes screw-in type rocker arm studs with positive stop shoulders, no valve lash adjustment is necessary or possible. If however, you engine utilizes the pressed-in rocker arm studs, use the following procedure to tighten the rocker arm nuts and properly center the pushrod on the hydraulic lifter:
  1. To prepare the engine for valve adjustment, rotate the crankshaft until the mark on the damper pulley aligns with the 0? mark on the timing plate and the No. 1 cylinder is on the compression stroke. You will know when the No. 1 piston is on it's compression stroke because both the intake and exhaust valves will remain closed as the crankshaft damper mark approaches the timing scale.

Another method to tell when the piston is coming up on the compression stroke is by removing the spark plug and placing your thumb over the hole, you will feel the air being forced out of the spark plug hole. Stop turning the crankshaft when the TDC timing mark on the crankshaft pulley is directly aligned with the timing mark pointer or the zero mark on the scale.
The valve arrangement is as follows:



E-I-I-E-I-E (right bank-front-to-rear) E-I-E-I-I-E (left bank-front-to-rear)

  1. With the engine on the compression stroke, adjust the exhaust valves of cylinders No. 1, 5 & 6 and the intake valves of cylinders No. 1, 2 & 3 by performing the following procedures:
    1. Back out the adjusting nut until lash can be felt at the pushrod.
    2. While rotating the pushrod, turn the adjusting nut inward until all of the lash is removed.
    3. When the play has disappeared, turn the adjusting nut inward 1 3 / 4 additional turns.

  2. Rotate the crankshaft one complete revolution and align the mark on the damper pulley with the 0? mark on the timing plate; the engine is now positioned on the No. 4 firing position. This time the No. 4 cylinder valves remain closed as the timing mark approaches the scale. Adjust the exhaust valves of cylinders No. 2, 3 & 4 and the intake valves of cylinders No. 4, 5 & 6, by performing the following procedures:
    1. Back out the adjusting nut until lash can be felt at the pushrod.
    2. While rotating the pushrod, turn the adjusting nut inward until all of the lash is removed.
    3. When the play has disappeared, turn the adjusting nut inward 1 3 / 4 additional turn.

Posted on Sep 23, 2010

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Rocker arm adjustment


Climers Moter manual has the drirections you need. You just turn the moter, untill both valves are closed. Turn the push rod as you tighten the rocker nut. When the puss rod quits turning, Give the nut on thr rocker on another half turn and your done. Only 15 more to do.

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