Click here to make tpub.com your Home Page

Page Title: Cleaning and Inspection.
Back | Up | Next

Click here for thousands of PDF manuals

Google


Web
www.tpub.com

Home


   
Information Categories
.... Administration
Advancement
Aerographer
Automotive
Aviation
Construction
Diving
Draftsman
Engineering
Electronics
Food and Cooking
Logistics
Math
Medical
Music
Nuclear Fundamentals
Photography
Religion
   
   

 

TM 10-3930-633-34
(1) Split metal bushings with hacksaw and
(5) Pull off brake drum with bearing cups (24
drive bushings from knuckle.
and 26), cone (27) and seal (28).
(2) Remove nicks and burrs from knuckle
(6) Remove brake assemblies from steering
bushing bore and polish with medium grit
knuckles.
abrasive.
(7) Remove nuts (16), cotter pins (17) and
(3) Apply chassis lube to bushings and
steering arms (14 and 13).
knuckle bore and install bushings.
(8) Drive out draw keys (33 and 34) from the
f. Reassembly.
small end. Remove expansion plugs (32 ) and drive
(1) Make certain that the knuckle pin hole in
out knuckles pins (35), to free knuckles (42 and
the axle center is clean and dry.
43), shims (39) and bearings (40) from axle beam
(2) Position and support the steering knuckle
(44).
assembly (41 or 42, fig. 12-2) on the axle center
c. Cleaning and Inspection.
(43).
(1) Clean parts having ground and polished
(3) Slide the thrust bearing (40) between the
surfaces, such as knuckle pins, knuckle pin
lower face of the axle center and the lower steering
sleeves, bearings and spindles, with solvent,
knuckle yoke.
Federal Specification P-D-680. Do not clean these
NOTE
parts in a hot solution tank or with water and
Thrust bearings that are not marked "TOP" to in-
alkaline solutions such as sodium hydroxide,
dicate proper installation orientation must be
orthosilicates or phosphates.
positioned with retainer lip down.
(2) Parts should be thoroughly dried im-
(4) Align the steering knuckle yoke holes
mediately after cleaning. Use soft, clean, lintless,
with axle center and thrust bearing bores.
absorbent paper towels or wiping rags free of
(5) Place a jack under the lower side of
abrasive material, such as lapping compound,
steering knuckle yoke and raise knuckle so that
metal filings or contaminated oil. Bearings should
all clearance is taken up between lower yoke,
never be dried by spinning with compressed air.
thrust bearing (40) and lower face of axle center
(3) Inspect the steering knuckle thrust
end.
bearing, wheel bearing cones and cups. Replace if
(6) Check the clearance between the top face
rollers or cups are worn, pitted or damaged in any
of upper axle center end and lower face of upper
way. If wheel bearing cups are to be replaced,
knuckle pin boss. The clearance must not exceed
remove from hubs with a suitable puller. Avoid
.005 inches. Washers and shims (39) are available
the use of drift and hammers as they may easily
in various thicknesses to take up this clearance
mutilate cup bores.
and hold it within the desired .005 inch tolerance.
(4) Inspect the steering knuckles and replace
(7) Align flats on knuckle pin (35) with the
if indications of weakness or excessive wear is
centerline of the draw key holes. Drive knuckle
found.
pin (35) through knuckle yoke, axle center and
(5) Check wear of the knuckle pins and
thrust bearing, working from top of axle.
bushings. Compare with new part dimensions to
(8) Install the draw keys (33) into the axle
determine extent of wear.
center. Drive the draw key in so that the flat on
d. Repair.
the key will mate with the corresponding flats on
(1) Repair generally consists of replacement
the knuckle pin. Seat pin firmly in place.
of defective parts.
(9) Install expansion plugs (32) in knuckle
(2) Straightening of bent parts should be
bores, top and bottom.
done cold. Various components are heat-treated
(10) Reinstall backing plates and brake
and hot straightening would destroy some of the
assemblies, if previously removed. Also, if axle
heat treatment.
assembly was removed from truck chassis,
(3) Axle centers (that are bent no more than
reinstall at this time.
inch) may be straightened cold; if bent more
(11 ) Install tie rod as outlined in Chapter 11.
than inch, they should be replaced.
(12) Install brake drum and hubs with
(4) Bent steering arms or knuckles should be
bearings in place and properly lubricated ac-
replaced rather than straightened.
cording to instructions in TM 10-3930-633-12.
e. Replacement of Knuckle Bushings. Nylon
(13) Axle is ready for installation.
bushings are used on production axles and are
g. Installation.
also used as a replacement for axles having the
(1) Refer to Chapter 2, Section IV, for in-
bronze type bushing. For installing nylon
replacement, proceed as follows:
12-3

Privacy Statement - Press Release - Copyright Information. - Contact Us

Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business