SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET1971CHEVELLE BASE, 2D CONVERTIBLE, 4.1L ENG VIN 4, NOT AVAILABLE TRANSREPAIR AND DIAGNOSIS (SINGLE PAGE)STEERINGMANUAL STEERINGPOWER STEERING SAGINAW ROTARY VALVEOVERHAULROTARY VALVEDISASSEMBLY
1971 Chevrolet Chevelle Base, 2D Convertible, 4.1L Eng VIN 4, Not Available Trans

Rotary Valve: Disassembly

1971 Chevrolet Chevelle Base, 2D Convertible, 4.1L Eng VIN 4, Not Available TransSECTION Disassembly

Remove cap-to-worm "O" ring seal and discard, then remove snap ring from top of spool spring. Remove spring by prying small coil with a small screwdriver. Work spring onto bearing diameter of stub shaft and slide spring off shaft. Remove valve spool.

CAUTION: Clearance between valve body and spool may be as low as.0004" and the slightest cocking of spool may ***I am it in valve body. To remove valve spool, hold valve assembly in both hands with stub shaft pointing down. Place fingers under valve body and thumbs on valve body cap, holding it against valve body squarely. End of torsion bar should be rapped lightly against bench. This will expose spool far enough so that it may be withdrawn from valve body. Withdraw spool with a steady oscillating pull to prevent jamming. If slight sticking occurs, make a gentle attempt to reverse withdrawal procedure. If this does not free the spool, it has become cocked in valve body bore. Do not attempt to force spool in or out if it becomes cocked. Continue to disassemble valve assembly and return to spool as described later.

Remove stub shaft, torsion bar and valve cap assembly by holding valve assembly in both hands as before, only with thumbs on valve body. Rap torsion bar lightly against bench. This will dislodge cap from valve body-to-cap pin. The stub shaft, torsion bar, and valve cap assembly can now be removed from valve body. If valve spool has become cocked (see above), it can now be freed. By visual inspection on a flat surface, it can be determined in which direction spool is cocked. A few very light taps with a soft plastic or rawhide mallet should align spool in bore and free it.

CAUTION: Do not tap with anything metalic. If spool can be rotated, it can be removed.

Remove "O" ring dampener seal from spool and discard. Carefully cut valve rings and ring back-up seals. Remove and discard.

Fig 1: Freeing Shaft Cap
G09347813Courtesy of GENERAL MOTORS COMPANY
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.