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NHTSA ID Number: 10144772

Manufacturer Communication Number: AR861

TSB/Document Date: 2018-09-17


Summary

AR861-Upper Shock/Track Bar Mount Inspection and Repair. Complaint-Upper plates previously installed in AR839 are cracking and pulling away from frame. Cause-Insuffiecient/bad welds not holding under loads. Correction-Inspect/correct welds including drilling 1/8" stop holes into frame at the end of cracks and weld per procedure. Vehicles Affected-All Spirit of Mobility (SOM) units with ReycoeBay logo Granning rear suspension where AR839 has already been completed.


DATE

B

A

UPDATED WELD PATTERN

DH

12/12/2017

B

ADDED TOP AND BOTTOM STITCH WELD. CLARIFIED SLOT WELD
CRITERIA

DH

8/2/2018

FLUSH WITH EXISTING PLATE

D

WELD PATTERN TO REDUCE HEAT BUILD-UP

10

TOP OF
PLATE

1/4"

1" - 4"

8
1/4"

4"

6
2

C

4

7

C

3
1

BOTTOM OF
PLATE

1/4"

5

1" - 4"

11
9

TYP. SLOTS

B

1/4"

ENTIRE SLOT

1/4"

B

6"

FIGURE 1: WELD PATTERN
INSTALLATION PROCEDURE

REMOVE ALL EXISTING BRACKETS

DRILL STOP ANY FRAME CRACKS AND FILL WITH WELD. GRIND SURFACE SMOOTH

PLACE RS RETROFIT BRACKET, AS SHOWN. THERE SHOULD BE A 1/4" SPACE
ABOVE AND BELOW FOR CLEARANCE AROUND EXISTING WELD BEADS

WITH BRACKET FLAT AGAINST FRAME, CLAMP AND WELD AS SHOWN IN FIGURE 1.

SLOTS MUST BE FILLED COMPLETELY
SEE BOM
SEE BOM

MATERIAL:
ALLOY:

A

BLANK SIZE:

FINISH WEIGHT:
DENSITY:

TOLERANCES:
FLOOR PLAN DIMS: 1/8"
FRACTIONAL DIMS: 1/16"
2 PLACE DECIMAL DIMS: .01
3 PLACE DECIMAL DIMS: .005
THIRD ANGLE PROJECTION

FINISH:

ARBOC SPECIALTY VEHICLES CLAIMS PROPRIETARY
RIGHTS IN THE MATERIAL DISCLOSED HEREON. NEITHER
THIS DRAWING NOR ANY REPRODUCTION THERE OF
MAY BE USED TO MANUFACTURE ANYTHING SHOWN
HEREON WITHOUT PERMISSION IN WRITING FROM
ARBOC SPECIALTY VEHICLES TO THE USER SPECIFICALLY
REFERRING TO THE DRAWINGS. INFORMATION
CONTAINED HEREON MAY BE THE EXPRESS PROPERTY
DESCRIPTION:
OF ARBOC SPECIALTY VEHICLES AND PROTECTED IN
THE FORM OF A U.S. PATENT.
DOC. # AME-008A
REV2 : 6-26-14

SURFACE AREA:

SIGNATURES/DATES

ALLOCATION MATL' SIZE:

DRAWN:
CHECKED:

ALLOCATION MATL' WEIGHT:

5

4

DH

3

6/8/2017

A

ASSEMBLY, FRAME, 191 WB, SOM SUSP REINF

DRAWING
SIZE:
1:20
SCALE:

DRAWING
NUMBER:
NEXT ASSY: -

A
2

PART REV

ARBOC SOM ASSY

B

SHEET:

1

2

OF

3

5

4

3

A

CS RETROFIT INSTALLATION

SIZE

2

SHEET:

3

OF 3

1310474

1

UNCONTROLLED COPY,CURRENT WHEN PRINTED DRAWING NUMBER:
MASTER IN FILE
ARBOC SOM

ASSY

REV

B

REV

DESCRIPTION OF CHANGE

BY

DATE

A

UPDATED WELD PATTERN

DH

12/12/2017

C

D

WELD PATTERN TO REDUCE HEAT BUILD-UP

TYP. SLOTS

1/4"

C

TOP OF
12 PLATE

1/4"

D

1" - 4"

ENTIRE SLOT

C

9

6

7

5

3

1

8

2
4
11

B

1/4"

1/4"

6"

1" - 4"

13
BOTTOM OF
PLATE

B

FIGURE 2: WELD PATTERN
INSTALLATION PROCEDURE
10
SCALE 1 : 4

REMOVE ALL EXISTING BRACKETS

DRILL STOP ANY CRACKS AND FILL WITH WELD. GRIND SURFACE SMOOTH
1/4"
5"

PLACE CS RETROFIT BRACKET, AS SHOWN. THERE SHOULD BE A 1/4" SPACE
ABOVE AND BELOW FOR CLEARANCE AROUND EXISTING WELD BEADS

WITH BRACKET FLAT AGAINST FRAME, CLAMP AND WELD AS SHOWN IN FIGURE 2. SLOTS MUST BE BE COMPLETELY
FILLED.
SEE BOM
SEE BOM

MATERIAL:
ALLOY:

A

BLANK SIZE:

FINISH WEIGHT:
DENSITY:

TOLERANCES:

FLOOR PLAN DIMS: 1/8"
FRACTIONAL DIMS: 1/16"
2 PLACE DECIMAL DIMS: .01
3 PLACE DECIMAL DIMS: .005
THIRD ANGLE PROJECTION

FINISH:

ARBOC SPECIALTY VEHICLES CLAIMS PROPRIETARY
RIGHTS IN THE MATERIAL DISCLOSED HEREON. NEITHER
THIS DRAWING NOR ANY REPRODUCTION THERE OF
MAY BE USED TO MANUFACTURE ANYTHING SHOWN
HEREON WITHOUT PERMISSION IN WRITING FROM
ARBOC SPECIALTY VEHICLES TO THE USER SPECIFICALLY
REFERRING TO THE DRAWINGS. INFORMATION
CONTAINED HEREON MAY BE THE EXPRESS PROPERTY
DESCRIPTION:
OF ARBOC SPECIALTY VEHICLES AND PROTECTED IN
THE FORM OF A U.S. PATENT.
DOC. # AME-008A
REV2 : 6-26-14

SURFACE AREA:

SIGNATURES/DATES

ALLOCATION MATL' SIZE:

DRAWN:
CHECKED:

ALLOCATION MATL' WEIGHT:

5

4

DH

3

6/8/2017

A

ASSEMBLY, FRAME, 191 WB, SOM SUSP REINF

DRAWING
SIZE:
1:24
SCALE:

DRAWING
NUMBER:
NEXT ASSY: -

A
2

PART REV

ARBOC SOM ASSY

B

SHEET:

1

3

OF

3

12

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TSB/Document ID: AR861

Replacement Service Bulletin Number:

MFR Communication Date: 2018-08-02

MFR Internal Campaign ID/Software Version:

Communication Type: Service Bulletin/Repair Instructions

NHTSA Components: SUSPENSION

MFR Component System:

MFR Component Subsystem:


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