TSB220216-110120

Service Bulletin Details

Public Details for: TSB220216-110120

This technical service bulletin describes melted downpipe blanket. Melted insulation panels from hot exhaust exhaust gas leaking inside enclosure. Root cause: assembly issue putting pressure on the exhaust bellow causing it to crack


- 9999 -

Models from 9999
9999 CUMMINS C 
11/30/22, 8:43 PM
C500D6RE Exhaust Bellow Cracking Issue
Technical Service Bulletin
Technical Service Bulletin: TSB220216
Released Date: 01-Nov-2022
C500D6RE Exhaust Bellow Cracking Issue
C500D6RE Exhaust Bellow Cracking Issue
Warranty Statement
The information in this document authorizes specific changes to the repair practice for failures
covered under product warranty coverages.
Contents
Product Affected
C500D6RE
Issue
Symptom:
Melted downpipe blanket
Melted insulation panels from hot exhaust
Exhaust gas leaking inside enclosure
Root Cause:
Assembly issue putting pressure on the exhaust bellow causing it to crack
Verification/Confirmation
Inspect both ends of the exhaust insulation for soot. If soot is found remove the insulation and
inspect the bellow.
Inspect the ceiling area and exhaust insulation above the radiator. If any melting is observed,
proceed to the resolution to replace the exhaust bellow.
Resolution
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C500D6RE Exhaust Bellow Cracking Issue
On generator sets that experience exhaust bellow failure, the damaged exhaust pipe assembly
will be removed and replaced with new Girtz supplied parts. Careful attention must be paid when
assembling the new exhaust assembly to ensure that the bellow is installed in a neutral state.
Refer to the service instructions for repair steps and the service parts availability for part numbers
and steps to get parts.
Service Instruction
Step 1: Remove Roof
A. Two roof panels of the enclosure need to be removed to allow access to the exhaust assembly
B. Cut caulk between roof panels
Figure 1, Roof Removal
C. Remove exhaust support bracket from roof - Note : Only the bottom nut needs to be removed
from the all-thread rod (the rod can remain attached to the roof)
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C500D6RE Exhaust Bellow Cracking Issue
Figure 2, Exhaust Clamp Removal
D. Remove all necessary bolts – Note: Enclosure hardware will be reused
Figure 3, Exterior Roof Mounting Bolts
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C500D6RE Exhaust Bellow Cracking Issue
Figure 4, Interior Roof Mounting Bolts
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C500D6RE Exhaust Bellow Cracking Issue
Figure 5, Hidden Interior Roof Mounting Bolts
E. Lift roof off unit – Note: Panels can be separated or lifted together as shown
Warning: Use caution when lifting. Follow all local lifting regulations.
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C500D6RE Exhaust Bellow Cracking Issue
Figure 6, Removing Roof
Step 2: Remove damaged pipe assembly
A. Drill out rivets holding heat shield to divider wall and remove heat shield
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Figure 7, Heat Shield Mounting Rivet
B. Remove insulation wrap from pipes
C. Remove SS band clamp at turbo elbow
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C500D6RE Exhaust Bellow Cracking Issue
Figure 8, Remove Insulation Wrap on Exhaust
D. Remove SS band clamp between pipe assemblies
Figure 9, Exhaust Joint
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C500D6RE Exhaust Bellow Cracking Issue
E. Unbolt exhaust assembly from SCR (Selective Catalytic Reduction)
Figure 10, Unbolt Exhaust from SCR
Step 3: Install new pipe assembly (Note: Assembly order needs to be followed to ensure bellows
is in neutral position)
A. Slide EXT29-0002-W11 though divider wall
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C500D6RE Exhaust Bellow Cracking Issue
Figure 11, New Exhaust Section
B. Bolt EXT29-0002-W11 to SCR with GSK-ANS08-T-STK exhaust gasket
C. Slide EXT29-0002-W10 into EXT29-0002-W11 (Do NOT install Riker Band Clamp at this point)
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Figure 12, New Exhaust Adjustment
D. Slide EXT29-0002-W10 over turbo elbow (Do NOT install Riker Band Clamp at this point)
Note: ensure bellow is in a neutral position – If centerline of bellows is not in-line with adjacent
tubing, adjust assemblies at the overlap joints until all offsets are removed
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Figure 13, Neutral Bellow Reference
E. Install RIKER-TEC600 at each joint
Ei. Evenly tighten bolts and torque to 50lbs
F. Double check bellows is still in neutral position
Step 4: Reassemble
A. Install insulation wrap
B. Install top portion of exhaust clamp under heat shield
C. Rivet heat shield to divider wall
D. Install roof panels
Warning: Use caution when lifting. Follow all local lifting regulations.
E. Caulk roof seam
F. Install exhaust support clamp
End of repair
Warranty Claim filing instructions:
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C500D6RE Exhaust Bellow Cracking Issue
For failures claimed before August 2022, parts will be provided by Girtz without a Purchase Order
(PO). For failures after August 2022 but within product warranty, a PO to purchase parts from Girtz
will be required. Include PO amount in warranty claim.
Fail Code: OXEUBR
Account Code: 67
Applicable SRTs:
00-901: 0.4 hours- Administrative time (shop)
99-999: 16 hours- Exhaust bellow repair
To order replacement parts outside of warranty, contact Girtz via email at [email protected]
Note: repairs and parts outside of warranty will not be covered by Cummins Inc. and
responsibility of the customer.
Service Parts Availability
Service parts are to be ordered from Girtz via email at [email protected]
See Table 1 for part numbers.
Tabsle 1, Service Parts
Part Description
Part Number
6” Exhaust Assembly (engine side)
EXT29-0002-W10
6” Exhaust Assembly (SCR side)
EXT29-0002-W11
6” Stainless Steel Band Clamp
RIKER-TEC600
8” Exhaust Gasket
GSK-ANS08-T-STK
Exhaust Wrap (if necessary)
EXT29-0002-R01
Rivet
RIV.AL.T.187-3_8
Caulk
DOWSIL 700 INDUSTRIAL GRADE
SILICONE SEALANT
Document History
Date
2022-10-21
Details
Module Created
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C500D6RE Exhaust Bellow Cracking Issue
Last Modified: 01-Nov-2022
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