| Re: [GMCnet] Pitman arm nut removal [message #301117 is a reply to message #301115] |
Wed, 25 May 2016 22:08   |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma:
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Senior Member |
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Chris,
I copied this out of Maintenance Manual X-7525 for you.
STEERING GEAR REMOVAL
1. Disconnect the power steering hoses from the
steering gear and cap the hose fittings.
2. Remove the pitman arm shaft nut. Mark the
relation of the pitman arm to the pitman shaft.
Disconnect the pitman arm from the pitman shaft using
tool number J-24319 or similar puller.
3. Loosen steering shaft yoke cinch bolt.
4. Remove the four bolts attaching the gear to the
frame side rail, permit the steering shaft yoke to slide
free of the steering gear stub shaft and remove the
gear.
STEERING GEAR INSTALLATION
See CAUTION on page 9-1 of this section.
CAUTION: All steering linkage fasteners are important attaching parts in that
they could affect the performance of vital components and systems, and/or
could result in major repair expense. They must be replaced with one of the same
part number or with an equivalent part if replacement becomes necessary. Do
not use a replacement part of lesser quality or substitute design. Torque values
must be used as specified during reassembly to assure proper retention of these
parts.
1. Before installing the steering gear, apply a
sodium soap fine fiber grease to the gear mounting
pads to prevent squeaks between the gear housing
and the frame. Make certain there is a minimum of
.040" clearance between coupling yoke and steering
gear upper seal.
2. Be sure the steering wheel is properly aligned
in relation to the wheels, and tighten the yoke cinch
bolt to 30 foot pounds. Tighten the steering gear to
frame bolts to 70 foot pounds.
3. Install pitman arm on steering gear, secure
with nut torqued to 160-210 foot-pounds.
4. Connect fluid pressure lines and bleed system.
(Refer to ADJUSTMENTS under POWER
STEERING PUMP earlier in this section).
BLEEDING POWER STEERING SYSTEMS
When a power steering pump or gear has been
installed, the air that has entered the system must be
bled out before the vehicle is again operated. If air is
allowed to remain in the power steering fluid system,
noisy and unsatisfactory operation of the system will
result. Bleed air from the hydraulic system as follows:
NOTE: Add only new power steering fluid (GM
1050017 or equivalent) to power steering sys
tem.
1. Fill oil reservoir to proper level and let oil
remain undisturbed for at least two minutes.
2. Start engine and run momentarily.
3. Add oil if necessary.
4. Repeat above procedure until oil level remains
constant after running engine.
5. Raise front end of vehicle so that wheels are off
the ground.
6. Turn the wheels (off ground) right and left,
lightly contacting the wheel stops.
7. Add oil if necessary.
8. Lower the vehicle and turn wheels right and
left on the ground.
9. Check oil level and refill as required.
10. If oil is extremely foamy, allow vehicle to
stand a few minutes with engine off and repeat above
procedure.
11. The presence of trapped air in the system will
cause the fluid level in the pump to rise when the
engine is turned off. Continue to bleed system until
this condition no longer occurs.
Regards,
Rob M.
USAussie - Downunder
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
-----Original Message-----
From: Gmclist [mailto:gmclist-bounces@list.gmcnet.org] On Behalf Of Tyler
Sent: Thursday, May 26, 2016 11:55 AM
To: gmclist@list.gmcnet.org
Subject: [GMCnet] Pitman arm nut removal
End game is put in a steering box. One night remove three power steering hoses. Today take hoses to get new ones made (especially
that hard line that
bound at the nut near pump and torqued the line shut). Budge four bolts to frame, they move. Check BIG nut before remove from frame.
Er. 1 1/4 impact
socket won't go on. With hammer style encouragement, won't go on (I was hoping it was just dirty, ha).
So, short of going out tomorrow and buying a 1 5/16 impact socket, what can the driveway mechanic do/try? The monster crescent
wrench with sledge
hammer was attempted without much vigor - I didn't like the thought of driving that much unfocused one way power through the system.
And guessing
phase two of this purchase, what are the suggestions if my cheap air impact wrench won't turn it even with correct socket?
Other end of same piece of steel: if I need to remove the drag link from the pitman arm, how to separate those two without tearing
up joint. Pickle
forks always leave a mess when I have used them.
Thoughts, suggestions and commiseration welcome. Thanks
--
1975 Glenbrook
Raleigh, NC
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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