Page 252
REPAIR INSTRUCTIONS, PART 1
Cylinder Head Pipe Plug
Replacement
GENERAL INFORMATION
Current-production 3/4-inch pipe plugs are
installed with a preapplied encapsulated epoxy
sealant. With the epoxy sealer, the pipe plugs are
locked into place, making them immovable when
normal loosening/tightening methods are used.
Should it become necessary to remove a pipe
plug, the following procedure should be used.
If a cylinder head has been placed in a hot
chemical tank for cleaning and degreasing, the
pipe plugs must be checked for looseness. If a
plug is found to be loose, the epoxy seal has
been broken, making it necessary to remove the
plug, clean the plug and cylinder head threads
with Loctite
®
Primer T and reseal the threads with
Loctite
®
277.
REPLACEMENT (3/4-INCH PLUGS)
Refer to Figure 276.
1. Heat the pipe plug to 400
°
F (205
°
C) with a
torch.
2. With the pipe plug heated sufficiently,
remove the plug from the cylinder head.
3. Remove the epoxy sealant from the threads
on both the plug and in the cylinder head.
4. Clean the plug and cylinder head threads
with Loctite
®
Primer T.
5. Apply Loctite
®
277 sealant to the plug and
cylinder head threads.
6. Install the plugs and tighten to the specified
torque, 55 lb-ft (68 N
폷
m).
276
Figure 276 — Cylinder Head Cup and Pipe Plug Locations
1. 1-1/16-inch Cup Plug
2. 3/4-inch NPT Plug
3. 13/16-inch Cup Plug
5-111.bk Page 252 Monday, July 10, 2006 2:26 PM
Summary of Contents for ASET AC
Page 6: ...TABLE OF CONTENTS Page iii TABLE OF CONTENTS 5 111 bk Page iii Monday July 10 2006 2 26 PM...
Page 14: ...INTRODUCTION Page 1 INTRODUCTION 5 111 bk Page 1 Monday July 10 2006 2 26 PM...
Page 23: ...Page 10 NOTES 5 111 bk Page 10 Monday July 10 2006 2 26 PM...
Page 96: ...COMPONENT LOCATOR Page 83 COMPONENT LOCATOR 5 111 bk Page 83 Monday July 10 2006 2 26 PM...
Page 99: ...Page 86 NOTES 5 111 bk Page 86 Monday July 10 2006 2 26 PM...
Page 100: ...TROUBLESHOOTING Page 87 TROUBLESHOOTING 5 111 bk Page 87 Monday July 10 2006 2 26 PM...
Page 140: ...MAINTENANCE Page 127 MAINTENANCE 5 111 bk Page 127 Monday July 10 2006 2 26 PM...
Page 153: ...Page 140 NOTES 5 111 bk Page 140 Monday July 10 2006 2 26 PM...
Page 383: ...Page 370 NOTES 5 111 bk Page 370 Monday July 10 2006 2 26 PM...
Page 479: ...Page 466 NOTES 5 111 bk Page 466 Monday July 10 2006 2 26 PM...
Page 480: ...SPECIFICATIONS Page 467 SPECIFICATIONS 5 111 bk Page 467 Monday July 10 2006 2 26 PM...
Page 505: ...Page 492 NOTES 5 111 bk Page 492 Monday July 10 2006 2 26 PM...
Page 513: ...Page 500 NOTES 5 111 bk Page 500 Monday July 10 2006 2 26 PM...
Page 519: ...Page 506 NOTES 5 111 bk Page 506 Monday July 10 2006 2 26 PM...
Page 520: ...APPENDIX Page 507 APPENDIX 5 111 bk Page 507 Monday July 10 2006 2 26 PM...
Page 528: ...INDEX Page 515 INDEX Index fm Page 515 Monday July 10 2006 2 48 PM...
Page 535: ...Page 522 NOTES Index fm Page 522 Monday July 10 2006 2 48 PM...