Freightliner FLA/FLB/FLC/FLD/FLL. Manual — part 29
midship bearing assembly if the rubber cushion
is deteriorated or oil-soaked.
5.
Check slip joints for spline wear by attempting to
bend the sleeve yoke and splined shaft back and
forth. See
. If radial looseness is greater
than 0.007 inch (0.18 mm), replace both the
sleeve yoke and the splined shaft.
6.
Visually examine the driveshaft tubes for dents,
bends, twists, or other damage. If any tube ap-
pears to be damaged, remove the driveshaft and
check the run-out on the tube. If the tube is not
straight (and cannot be straightened) within
0.005 inch (0.127 mm) on the slip-joint-seal sur-
face of the splined shaft, 0.010 inch (0.254 mm)
on the tube 3 inches (76 mm) from the front and
rear welds, and 0.015 inch (0.381 mm) at the
center of the tube, replace the tube. See
If the driveshaft tube requires straightening or
replacement, balance the repaired driveshaft be-
fore installing it.
7.
Examine the driveshaft for evidence of missing
balance weights, and for build-up of foreign ma-
terial. Remove any foreign material. If there is
4
5
2
7
8
9
10
11
12
13
14
3
15
16
2
3
1
6
05/27/93
f410032a
NOTE: Not all fasteners are shown.
1.
Full-Round End Yoke
2.
Bearing Cap
3.
Lockplate and Capscrew
4.
Main Transmission
5.
Half-Round End Yoke
6.
Yoke Strap and Capscrew
7.
Slip Joint Assembly
8.
Driveshaft Tube
9.
Driveshaft Yoke (Full-Round)
10. Input Shaft End Yoke (Half-
Round)
11. Splined Shaft
12. Slip Joint Seal Assembly
13. Sleeve Yoke (Full-Round)
14. Yoke Lug
15. U-Joint Cross
16. U-Joint Assembly
Fig. 2, Driveline Assembly
Driveline
41
Heavy-Duty Trucks Maintenance Manual, April 1998
41/2
any evidence that balance weights are missing,
remove the driveshaft and have it balanced.
8.
For driveshafts with slip joints, check to be sure
the yoke plug is not loose or missing. See
Ref. 2. Repair or replace the yoke plug as
needed. If the yoke plug is missing, the splined
shaft may be hitting the plug and knocking it out;
contact your Regional Service Office for assis-
tance in determining the correct driveshaft
length.
41–02 Driveline Lubricating
U-joint Lubricating
1.
Wipe all old grease and dirt from each U-joint
grease fitting. See
, Ref. 8.
2.
Use a hand-type grease gun, or a high-pressure
gun with a low-pressure adapter, to lubricate
U-joints. If a low-pressure adapter is not used
with the high-pressure gun, the U-joints may not
receive enough grease.
Using lithium 12-Hydroxy stearate grease (NLGI
grade 1 or grade 2, with EP additives), lubricate
until
new
grease can be seen at
all four
U-joint
seals.
IMPORTANT: Fresh grease must be seen es-
caping from
all four bearing-cap seals of each
U-joint. On full-round yokes, if most of the
grease being added to a U-joint can be seen
escaping from just one of the U-joint seals,
bend the tabs of the lockstrap (if equipped)
away from the heads of the bearing-cap cap-
screws, then check the torque on the capscrews
at that seal. Tighten the bearing-cap capscrews
f410012a
05/27/93
Attempt to bend the sleeve yoke and splined shaft back
and forth.
Fig. 3, Slip Joint Spline Wear Checking
f410110b
06/13/96
A
A
B
C
C
D
A. Measurement: 3" (76 mm)
B. Measurement: 0.005" (0.127 mm)
C. Measurement: 0.010" (0.254 mm)
D. Measurement: 0.015" (0.381 mm)
Fig. 4, Driveshaft Runout Specifications
f410050a
10/20/93
1
1
2
3
3
3
4
5
6
7
8
A
A. After grease appears, cover the pressure-relief hole
while continuing to lubricate.
1.
Slip Joint Grease
Fitting (with grease
gun attached)
2.
Yoke Plug
3.
Grease
4.
Half-Round Yoke
5.
Yoke Plug Pressure-
Relief Hole
6.
Slip Joint Seal
7.
Full-Round Yoke
8.
U-Joint Grease Fitting
Fig. 5, Slip Joint and U-Joint Lubricating
Driveline
41
Heavy-Duty Trucks Maintenance Manual, April 1998
41/3
to the torque values given in
. If
equipped, bend the lockstrap tabs up, against a
flat side of each capscrew head. If the cap-
screws were already tight, or all of the U-joint
seals still do not purge, remove the bearing cap
at that seal, and examine the seal for damage.
If the seal is damaged, replace the complete
U-joint.
If grease does not appear at one seal, use a
screwdriver to pry the U-joint trunnion away
from the non-purging seal, or tap the driveshaft
or yoke with a plastic or rawhide mallet on the
side opposite the dry seal, while continuing to
lubricate. If grease still does not appear, bend
the tabs of the lockstrap away from the heads of
the bearing-cap capscrews, then loosen the
capscrews at the bearing with the dry seal, to
relieve seal tension. Lubricate the U-joint until
new grease is seen at the seal, then tighten the
capscrews to the above specifications, and
bend the tabs of the lockstrap against a flat side
of each capscrew head. If the bearing will not
take grease, replace the U-joint.
For U-joint replacement, follow the procedure in
Group 41 of the
Heavy-Duty Trucks Service
Manual.
3.
Check the purged grease. If it appears rusty,
gritty, or burned, replace the U-joint.
4.
Wipe the purged grease from the seals, and any
excess grease from the grease fitting.
Slip Joint Spline Lubricating
1.
Wipe all old grease and dirt from the slip joint
grease fitting. See
, Ref. 1.
2.
Use a hand-type grease gun or a high-pressure
gun with a low-pressure adapter, to lubricate the
slip joint. Add multipurpose chassis grease
(lithium 12-hydroxy stearate, NLGI grade 1 or
grade 2, with EP additives) until it appears at the
pressure-relief hole in the yoke plug. Then cover
the relief hole with your finger, while continuing
to apply gun pressure until new grease appears
at the slip joint seal. See
. This ensures
complete lubrication of the splines.
3.
Wipe the purged grease from the pressure-relief
hole and slip joint seal, and any excess grease
from the grease fitting.
Driveline
41
Heavy-Duty Trucks Maintenance Manual, April 1998
41/4
Title of Maintenance Operation (MOP)
MOP Number
Alcohol Evaporator Checking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42–07
Anchorlok Aftercooler Automatic Ejector Valve Clearing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42–15
Bendix Air Brake Valve Disassembly, Cleaning, Inspecting, and Lubricating
(DV–2, PP–3, and Single Check Valve)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42–18
Bendix Air Brake Valve Disassembly, Cleaning, and Inspecting (BP–1, Double
Check Valve, E–6, PP–7, QR–1, R–6, R–14, SR–1, ST–3, TC–7, TP–5, and
TR–3). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42–17
Bendix Air Brake Valve Inspecting and Testing (BP–1, BP–R1, LQ–5, PP–7,
R–14, and TC–7). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42–19
Bendix Air Brake Valve Operation Checking (BP–R1 and E–12). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42–16
Bendix Air Dryer Checking (AD–2, AD–4, or AD–9) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42–10
Bendix Air Dryer Desiccant Replacing (AD–2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42–12
Bendix Air Dryer Desiccant Replacing (AD–4 or AD–9) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42–13
Bendix Air Dryer or Anchorlok Aftercooler Inspecting (Bendix AD–2, AD–4,
AD–9, or Anchorlok). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42–11
Bendix Alcohol Evaporator Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42–08
Bendix Alcohol Evaporator Gasket Replacing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42–09
Bendix Foot Brake Valve Actuator Lubricating (E–6 or E–12) and Leak-Testing
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42–20
Brake Adjusting—Cam Brakes With Manual Slack Adjusters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42–01
Brake Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42–24
CR Brakemaster Air Dryer Cleaning (Model 62 or 68) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42–14
Camshaft Bracket Bushing Lubricating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42–02
Manual/Automatic Slack Adjuster Lubricating and Checking (All Models) . . . . . . . . . . . . . . . . . . . . . . . . . 42–03
Meritor Automatic Slack Adjuster Lubricating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42–04
Meritor WABCO System Saver 1000 Air Dryer Desiccant Replacing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42–23
Midland Quick Release and Flipper Valve Checking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42–22
Sealco Moisture Ejection Valve Operation- and Leak-Testing (Model 6300). . . . . . . . . . . . . . . . . . . . . . . . 42–21
Wedge Brake Checking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42–05
Wedge Brake Inspecting and Lubricating. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42–06
Brakes
42
Index, Alphabetical
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