NHTSA ID Number: 10185454
Manufacturer Communication Number: RCB-002-15
TSB/Document Date: 2021-01-11
Summary
If the parking brake is not released in accordance with the instructions in the Driver?s/Owner?s Manual (such as releasing the parking brake lever
only by pushing the lever release button, without holding the lever with the hand, until it is completely released), the tension of the brake cable could be released quickly, causing an increase in the friction between the long hole in the slide area and the cable joining pin. In addition, improper adjustment of the parking brake cable that is stretched due to repeated operation of the parking brake could increase the contact force between the cable joining pin and the long hole in the slide area of the parking brake lever during the operation of the parking brake. If the parking brake continues to be operated in such a condition, the long hole in the slide area of the parking brake lever becomes worn and the long hole diameter becomes enlarged. If that condition occurs, the washer fixed to the cable joining pin can become stuck in the worn and enlarged long hole when the parking brake lever is pulled. This situation may prevent the parking brake lever being pulled to its full stroke, leading to the application of insufficient brake force. In the worst case situation, vibration can cause the washer which is stuck in the worn and enlarged long hole to come off, releasing the parking brake lever and resulting in the vehicle moving.
from the
clevis pin,
and then
remove the
clevis pin
that retains
the parking
brake cable
to the
parking
brake lever.
Remove
and
dispose of
the washer,
clip and
pin.
3. Remove the 4 bolts securing the
parking brake lever to the cab.
Remove the lever from the vehicle.
Remove the plastic button from the
lever. Retain the bolts and plastic
button for reassembly. Discard the
old lever.
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Vendor Ref.: HMM-150109-N1
SAFETY RECALL
4. Remove the clevis from the parking
brake cable. Discard the old clevis.
Remove the two nuts securing the
cable to the cab. Retain these nuts for
reassembly.
5. Pull the cable
out from the
underside of
the cab.
Remove the
clip and
connecting pin
from the drum
assembly.
Remove the
two parking
brake cable
attachment
bolts from the
bracket. Retain
the bolts, clip,
and connecting
pin for
reassembly.
Discard the old
cable.
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Vendor Ref.: HMM-150109-N1
SAFETY RECALL
Parking Brake Cable Installation and Adjustment
1. Insert the new parking brake cable (46410-E0130) into the cab and attach to the bracket with two bolts.
See photo A below. Reinstall the connecting pin and clip to attach the cable to the drum mechanism. See
photo B below. Confirm the cable is inserted into the cab before tightening the two bracket bolts to the
specified torque. Refer to photos C and D below for reference.
Specified Torque: 22Nm (16 lb-ft)
NOTICE: Rotate the parking brake cable 180 degrees at the cab if the cable is misaligned when attempting to
install.
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Vendor Ref.: HMM-150109-N1
SAFETY RECALL
2. Secure the cable to the cab floor with
two nuts. Tighten to the specified
torque.
Specified Torque: 51.5Nm (38 lb-ft)
3. Thread the new cIevis (SZ231-08009)
on the end of the cable. Insert the
new clevis pin through the clevis.
Using a pull force gauge, measure the
tensile strength required to pull the
clevis pin 5.5 inches (142mm) up from
the floorboard. Refer to the
photograph on the right for
reference. Adjust the position of the
clevis on the cable so that 44 pounds
(196N) is needed to achieve a clevis
pin height of 5.5 inches (142mm).
Once achieved, tighten the jam nut
against the clevis to the specified
torque.
Specified Torque: 16 lb-ft (22 Nm)
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Vendor Ref.: HMM-150109-N1
SAFETY RECALL
NOTICE: Ensure that after the clevis pin
height is set, the minimum dimension for
exposed threads on the cable of 2.5mm at
both ends is met. Refer to the
photographs for reference. If this cannot
be achieved, ensure proper cable
installation as outlined in step 1.
Parking Brake Lever Installation
1. Insert the clevis pin through the
arm that pulls the parking brake
cable on the new lever (46210E0114). Set the lever to the
applied position as depicted in the
photo to the right. Set the lever
travel adjustment using the
adjustment knob on top of the
parking brake lever. Rotating the
knob clockwise will raise the clevis
pin. Rotating the knob
counterclockwise will lower the
clevis pin. Refer to the photograph
on the right for the measurement
points. Refer to the specified
value.
Specified Value: -1 73 inches (44mm)
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Vendor Ref.: HMM-150109-N1
SAFETY RECALL
2. Install the new parking brake lever
in the cab using the 4 bolts
removed previously. Tighten the
bolts to the specified torque.
Specified Torque: 52Nm (39 lb-ft)
3. Push the lever down to the
“release” position. Remove the
retaining clip from the clevis pin
on the parking brake lever. Pull
out the pin. Connect the cable
clevis to the parking brake lever
inserting the pin from the left
hand side of the truck (the side
where the switch is installed).
Reinstall the retaining clip. Ensure
the pin is inserted through both
rollers.
4. Apply and release the parking
brake 3 times.
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Vendor Ref.: HMM-150109-N1
SAFETY RECALL
5. Release the parking brake.
6. Ensure the transmission is in the
neutral position and the wheels
are chocked.
7. From under the vehicle, it should
be possible to easily rock the
parking brake drum back forth due
to the backlash in the rear axle. If
the drum does not easily move by
hand, the parking brake cable
clevis is adjusted too tight. Follow
the “Parking Brake Cable
Installation and Adjustment”
procedure above and re-evaluate.
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Vendor Ref.: HMM-150109-N1
SAFETY RECALL
Parking Brake Switch Installation
1. Install the previously removed
button into the new parking brake
switch (84080-E0011).
2. Connect the parking brake
electrical harness clip to the new
parking brake switch.
3. Install the new parking brake
switch to the parking brake lever
assembly. Install the 2 previously
removed mounting bolts and
tighten the bolts to the specified
torque.
Specified Torque: 3.3 lb-ft (4.5 Nm)
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Vendor Ref.: HMM-150109-N1
SAFETY RECALL
4. Connect the parking brake switch
electrical connector.
5. Turn the starter switch to the
“ON” position to validate proper
parking brake warning lamp
operation.
6. Apply and release the parking
brake several times. Validate that
the parking brake warning lamp is
off in the released position. If the
warning lamp fails to turn off in
the released position, ensure that
the lever or the cable are not
binding and that the switch and
shorting terminal are properly
installed.
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Vendor Ref.: HMM-150109-N1
SAFETY RECALL
7. Turn the starter switch to the off
(LOCK) position, and remove the
key. Apply the parking brake.
Parking Brake Console Installation
1. Place the console cover on a work
bench with the lever opening
facing towards you. In the left side
of the opening, trim the alignment
rib using side cutters or a utility
knife. This will allow the cover to
fit over the new parking brake
lever. Refer to the photographs for
reference.
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Vendor Ref.: HMM-150109-N1
SAFETY RECALL
2. Install the previously removed
button onto the new parking
brake lever.
3. Install the parking brake lever
cover and 2 screws securing the
cover. Tighten the 2 screws to the
specified torque.
Specified Torque: 1.5 lb-ft (2.0 Nm)
4. Go to the procedure for “Setting
the Parking Brake Lever Pull
Force.”
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Vendor Ref.: HMM-150109-N1
SAFETY RECALL
Setting the Parking Brake Lever Pull Force
1. Release parking brake.
2. Using a pull gauge, check the pull force of the parking brake lever and compare to the specification.
Does the parking brake lever pull force meet the specification?
- Yes, the pull force meets the specification. Proceed to step 4 in this section.
- No, the pull force does not meet the specification. Proceed to step 3 in this section.
Pull Force Specification: 74.5 – 85.5 lb (332 - 380 N)
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Vendor Ref.: HMM-150109-N1
SAFETY RECALL
3. Rotate the adjustment knob on
the parking brake lever clockwise
to increase the pull force and
counterclockwise to decrease the
pull force. Set the parking brake
lever pull force to the specification
set forth in step 2 in “Setting
Parking Brake Lever Pull Force”
procedure, above.
4. Install the parking brake lever handle with the screw and nut. Tighten the screw to the specified
torque.
Specified Torque: 1.1 lb-ft (1.5 Nm)
5. Apply the parking brake.
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Vendor Ref.: HMM-150109-N1
SAFETY RECALL
6. Proceed to the “Final Inspection”
procedure.
FINAL INSPECTION:
To complete this campaign procedure, review the campaign and confirm the following:
The parking brake lever pull force is within specification.
The parking brake cable turnbuckle locknut is torqued to specification.
All components that were removed and/or replaced have been properly installed
and fasteners torqued to their specification.
The parking brake lamp works correctly with the parking brake lever in the
applied and unapplied positions.
Claim Application:
a) Recall No.: A9970
b) Labor charge: Reference chart below
c) Warranty code: 33310
d) Trouble code: 98
e) Operation code: Reference chart below
f) Original failed part number: 9999999999
Operation Code Labor
Lever, Switch and Cable
33150AOT
2.7hr
Replacement
Page 22 of 22
Vendor Ref.: HMM-150109-N1
- Mixes well with conventional fluids
- Low-moisture formula provides excellent vapor lock...
- Ideal for hydraulic and disc brakes
- Provides an extra margin of safety in extreme braking...
- Mix of polyglycol ethers ensures hot brake-system operation...
- Excellent for ABS, disc and drum brake systems
- Delivers braking power when needed by avoiding a spongy...
- Both wet and dry boiling points exceed the minimum...
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TSB/Document ID: RCB-002-15
Replacement Service Bulletin Number:
MFR Communication Date: 2015-01-26
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: PARKING BRAKE
MFR Component System:
MFR Component Subsystem:
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