NHTSA ID Number: 10185583
Manufacturer Communication Number: SB-14-001
TSB/Document Date: 2021-01-19
Summary
In the event that a cracked or broken cab step exists on the driver?s side or passenger side of the subject vehicles, a revised cab step has been released with a reinforcement pipe that will increase the robustness of the cab step to reduce the chance of repeated cracking or breaking. Vehicles built on or before January 18, 2013 will also require a reinforcement bolt be installed in the multi-layer steel flange on both sides of the vehicle.
marking was made.
NOTICE: Use caution to avoid drilling into the door
once the drill bit protrudes from the multi-layer steel
flange.
7. Using a rat tail file, de-burr the outside edge of
the drilled hole.
8. Mask the area around the drilled hole. Apply
an anti-rust aerosol spray paint such as
Rustoleum that matches the color of the cab.
Allow the paint to dry before installing the
retainer bolt.
Page 14 of 27
Vendor Ref.: HMM-140109-J1
Group:
Bulletin No.:
Issue Date:
61 – Cab & Body
SB-14-001
08/25/2014
SERVICE BULLETIN
9. To drill the hole on the passenger side flange, it will be necessary to loosen and reposition the A/C
condenser and the A/C condenser bracket. First, remove the bolt retaining the A/C line to the support
bracket.
NOTICE: Do not discard the bolt. It will be reused.
A/C
Condense
r
Condenser
Bracket
Bolt
Right Front Tire
10. Remove the 4 nuts retaining the A/C condenser to the A/C condenser bracket.
NOTICE: Do not discard the nuts. They will be reused.
Nuts
Bottom of
Frame Rail
Page 15 of 27
Vendor Ref.: HMM-140109-J1
Group:
Bulletin No.:
Issue Date:
61 – Cab & Body
SB-14-001
08/25/2014
SERVICE BULLETIN
11. Remove the 2 bolts and 2 nuts retaining the A/C condenser bracket to the frame.
NOTICE: Do not discard the nuts or bolts. They will be reused.
Nuts
Bolts
12. Reposition the A/C condenser and the
condenser bracket so that there is room to
drill the hole in the multi-layer steel flange.
Flange
13. On the passenger side, locate the flange near
the front of the bottom of the cab. The spot
weld may be broken. Regardless of whether or
not the spot weld is broken, install Vice-Grips
to lock the flange together in preparation for
drilling through the multi-layer steel flange.
Page 16 of 27
Flange
Vendor Ref.: HMM-140109-J1
Group:
Bulletin No.:
Issue Date:
61 – Cab & Body
SB-14-001
08/25/2014
SERVICE BULLETIN
14. While looking under the passenger side of the cab, mark the 9mm hole to be drilled. The center of the
hole should be 18mm (3/4 inch) above the center of the top hole in the lower flange. It should be 2mm
to the left of the center of the 2 holes in the flange (on the edge of the ridge in the flange). See
diagram below.
9mm Hole
Hole should
meet edge
of this ridge
WARNING: To avoid personal injury, eye and ear
protection must be worn when drilling under the cab
of the vehicle.
15. Using a 9mm (23/64th) drill bit, drill a hole
through the multi-layer steel flange where the
marking was made.
NOTICE: Use caution to avoid drilling into the door
once the drill bit protrudes from the multi-layer steel
flange.
16. Using a rat tail file, de-burr the outside edge of
the drilled hole.
Page 17 of 27
Vendor Ref.: HMM-140109-J1
Group:
Bulletin No.:
Issue Date:
61 – Cab & Body
SB-14-001
08/25/2014
SERVICE BULLETIN
17. Mask the area around the drilled hole. Apply
an anti-rust aerosol spray paint such as
Rustoleum that matches the color of the cab.
Allow the paint to dry before installing the
retainer bolt.
18. Install the 2 bolts and 2 nuts retaining the A/C condenser bracket to the frame. Tighten to the specified
torque.
Nut Specified Torque: 55 lb-ft (75 Nm)
Bolt Specified Torque: 89 lb-ft (120 Nm)
Nuts
Bolts
Page 18 of 27
Vendor Ref.: HMM-140109-J1
Group:
Bulletin No.:
Issue Date:
61 – Cab & Body
SB-14-001
08/25/2014
SERVICE BULLETIN
19. Install the 4 nuts retaining the A/C condenser to the A/C condenser bracket. Tighten to the specified
torque.
Specified Torque: 4 lb-ft (5.5 Nm)
Nuts
Bottom of
Frame
Rail
20. Install the bolt retaining the A/C line to the support bracket. Tighten to the specified torque.
Specified Torque: 11 lb-ft (15 Nm)
Right Front Tire
Page 19 of 27
Vendor Ref.: HMM-140109-J1
Group:
Bulletin No.:
Issue Date:
61 – Cab & Body
SB-14-001
08/25/2014
SERVICE BULLETIN
21. Install the passenger side reinforcement pipe (58307-37110) for the passenger side cab step using 2
bolts (91551-80820). Ensure the hole on the pipe is aligned with the welded nut located where the cab
step attaches to the body. Tighten the 2 bolts to the specified torque.
Specified Torque: 23 lb-ft (31 Nm)
-Single cab shown below; the crew cab is similarReinforcement
Pipe
Align With
Hole
22. Remove the 2 bolts from the rear of the vacuum tank under the cab on the driver’s side.
NOTICE: Do not discard the bolts. They will be reused during the next step.
-Single cab shown below; the crew cab is similarBolts
Vacuum
Tank
Page 20 of 27
Vendor Ref.: HMM-140109-J1
Group:
Bulletin No.:
Issue Date:
61 – Cab & Body
SB-14-001
08/25/2014
SERVICE BULLETIN
23. Install the driver’s side reinforcement pipe (58308-37090) for the cab step. The pipe will be mounted in
the same place from which the vacuum tank bolts were removed. Ensure the hole on the pipe is
aligned with the welded nut located where the cab step attaches to the body. Tighten the 2 bolts to
the specified torque.
Specified Torque: 23 lb-ft (31 Nm)
-Single cab shown below; the crew cab is similarBolts
Align
With Hole
24. Locate the ground wires on the driver’s side frame rail. The ground wires will need to be repositioned
to allow for 35mm of clearance between the new reinforcement pipe and the chassis grounds. Loosen
the 2 ground bolts; reposition the wires as needed, then torque the ground bolts to the specified
torque.
Specified Torque: 13 lb-ft (18 Nm)
Vacuum
Tank
35mm
Reinforcement
Pipe
Grounds
Page 21 of 27
35mm
Vendor Ref.: HMM-140109-J1
Group:
Bulletin No.:
Issue Date:
61 – Cab & Body
SB-14-001
08/25/2014
SERVICE BULLETIN
25. Once the paint has dried, remove the masking tape. Install a bolt (90109-08295) through the flange on
each side. Install a nut (90179-08184) on the back side of the flange. Tighten the nut to the specified
torque.
Specified Torque: 20 lb-ft (27 Nm)
Nut &
Bolt
Nut &
Bolt
26. Install the new passenger side cab step
(51083-37064). Install the 8 bolts into the cab
step. Tighten them to the specified torque.
Specified Torque: 9.5 lb-ft (13 Nm)
Bolts
27. Install the new driver’s side cab step (5108437053). Install the 10 bolts into the cab step.
Tighten them to the specified torque.
Specified Torque: 9.5 lb-ft (13 Nm)
Bolts
Page 22 of 27
Vendor Ref.: HMM-140109-J1
Group:
Bulletin No.:
Issue Date:
61 – Cab & Body
SB-14-001
08/25/2014
SERVICE BULLETIN
28. Install the 6 bolts in the front bumper. Tighten
them to the specified torque.
Specified Torque: 13 lb-ft (18 Nm)
Bolts
REPAIR PROCEDURE – C
NOTICE: This repair procedure is for all vehicles built after January 18, 2013.
1. On single cab vehicles, release the cab lock and raise the cab.
Note: The cab does not need to be raised on crew cab vehicles.
Cab Lock
2. Open the driver’s door and remove the 10
bolts from the driver’s side cab step. Remove
and discard the driver’s side cab step.
NOTICE: Do not discard the 10 bolts. They will be
reused during the reassembly procedure.
Page 23 of 27
Bolts
Vendor Ref.: HMM-140109-J1
Group:
Bulletin No.:
Issue Date:
61 – Cab & Body
SB-14-001
08/25/2014
SERVICE BULLETIN
3. Open the passenger door and remove the 8
bolts from the passenger side cab step.
Remove and discard the passenger side cab
step.
Bolts
NOTICE: Do not discard the 8 bolts. They will be
reused during the reassembly procedure.
4. Install the passenger side reinforcement pipe (58307-37110) for the passenger side cab step using 2
bolts (91551-80820). Ensure the hole on the pipe is aligned with the welded nut located where the cab
step attaches to the body. Tighten the 2 bolts to the specified torque.
Specified Torque: 23 lb-ft (31 Nm)
-Single cab shown below; the crew cab is similarReinforcement
Pipe
Align With
Hole
Bolts
Page 24 of 27
Vendor Ref.: HMM-140109-J1
Group:
Bulletin No.:
Issue Date:
61 – Cab & Body
SB-14-001
08/25/2014
SERVICE BULLETIN
5. Remove the 2 bolts from the rear of the vacuum tank under the cab on the driver’s side.
NOTICE: Do not discard the bolts. They will be reused during the next step.
-Single cab shown below, the crew cab similarBolts
Vacuum
Tank
6. Install the driver’s side reinforcement pipe (58308-37090) for the cab step. The pipe will be mounted in
the same place from which the vacuum tank bolts were removed. Ensure the hole on the pipe is
aligned with the welded nut located where the cab step attaches to the body. Tighten the 2 bolts to
the specified torque.
Specified Torque: 23 lb-ft (31 Nm)
-Single cab shown below; the crew cab is similarBolts
Reinforcement
Pipe
Page 25 of 27
Align
With Hole
Vendor Ref.: HMM-140109-J1
Group:
Bulletin No.:
Issue Date:
61 – Cab & Body
SB-14-001
08/25/2014
SERVICE BULLETIN
7. Locate the ground wires on the driver’s side frame rail. The ground wires will need to be repositioned
to allow for 35mm of clearance between the new reinforcement pipe and the chassis grounds. Loosen
the 2 ground bolts; reposition the wires as needed, then torque the ground bolts to the specified
torque.
Specified Torque: 13 lb-ft (18 Nm)
Vacuum
Tank
35mm
35mm
Reinforcement
Pipe
Bolts
Grounds
8. Install the new passenger side cab step
(51083-37064). Install the 8 bolts into the cab
step. Tighten them to the specified torque.
Bolts
Specified Torque: 9.5 lb-ft (13 Nm)
9. Install the new driver’s side cab step (5108437053). Install the 10 bolts into the cab step.
Tighten them to the specified torque.
Specified Torque: 9.5 lb-ft (13 Nm)
Page 26 of 27
Bolts
Vendor Ref.: HMM-140109-J1
Group:
Bulletin No.:
Issue Date:
61 – Cab & Body
SB-14-001
08/25/2014
SERVICE BULLETIN
10. On single cab vehicles, lower the cab and
engage the cab lock.
Cab Lock
FINAL INSPECTION PROCEDURE:
To complete this Technical Service Bulletin, review the bulletin and confirm the following:
The reinforcement nuts and bolts have been installed through the multi-layer steel
flange on vehicles built on or before January 18, 2013.
All nuts and bolts are secure and have been torqued to specification.
The cab has been lowered and cab lock engaged.
Claim Application:
* Reimbursable in accordance within the terms and policies of the Hino Truck limited warranties.
a) Bulletin No.: 14-001
b) Labor charge: Based on the following table.
Operation
Cab step Procedure – A (before 1/18/13)
Cab step Procedure – B (before 1/18/13)
Cab step Procedure – C (after 1/18/13)
Labor
1.2 Hours
1.7 Hours
0.6 Hour
c) Warranty code: 71160
d) Trouble code: 52
e) Operation code: 71150AOT
f) Original failed part: 51084-37051
Page 27 of 27
Vendor Ref.: HMM-140109-J1
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TSB/Document ID: SB-14-001
Replacement Service Bulletin Number:
MFR Communication Date: 2014-08-25
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: EQUIPMENT
MFR Component System:
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