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TB 212-11-211 

Page 7 of 8 

ECCN EAR99 

 
 

 

 
 

Figure 3 

 

Summary of Contents for 212

Page 1: ...ell Helicopter has been made aware of a possible fouling condition that may exist between the number one jackshaft support and the forward firewall of the intake cowling This Technical Bulletin provides an inspection procedure to verify adequate clearance between the N1 jackshaft support and if a fouling condition exists the corrective action to be taken Applicability of this bulletin to any spare...

Page 2: ...412 060 024 101 Snubber Assembly 1 212 060 700 131 Spacer 1 212 060 700 133 Spacer 2 MS27039 1 21 Screw 3 NAS1149C0316R Washer 3 Consumable Material The following material is required to accomplish this bulletin but may not require ordering depending on the operator s consumable material stock levels This material may be obtained through your Bell Helicopter Textron Supply Center Part Number Nomen...

Page 3: ... SPM Standard Practices Manual PUBLICATIONS AFFECTED BHT 212 IPB Illustrated Parts Breakdown ACCOMPLISHMENT INSTRUCTIONS Part 1 1 Prepare helicopter for maintenance 2 Open forward transmission cowling 1 Figure 1 3 Remove left hand air inlet cowling 2 4 Inspect N1 Jackshaft support bearing boss for wear on the forward side of the boss see Figure 2 5 If wear is found proceed to Part 2 of this Techni...

Page 4: ...shers 4 from the support and discard 10 Apply a thin film of sealant C 599 to the top and bottom of the faying surfaces of the two spacers 6 11 Apply a thin film of sealant C 599 to the top and bottom of the faying surfaces of spacer 5 12 Install the two spacers 6 one on the forward and one on the aft outboard holes on top of the support 13 Install one spacer 5 on the forward inboard hole on top o...

Page 5: ...s still contacting the N1 jackshaft support please contact Product Support Engineering 19 Remove left hand air inlet cowling 2 20 Reinstall the transition duct 2 Figure 4 on the inlet cowling by installing the two screws 3 and washers 4 21 Reinstall the left hand air inlet cowling 2 Figure 1 and latch in place 22 Close and latch transmission cowling 1 23 Make an entry in helicopter historical serv...

Page 6: ...TB 212 11 211 Page 6 of 8 ECCN EAR99 Figure 2 ...

Page 7: ...TB 212 11 211 Page 7 of 8 ECCN EAR99 Figure 3 ...

Page 8: ...TB 212 11 211 Page 8 of 8 ECCN EAR99 Figure 4 ...

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