TH350 rebuild tech

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[[file:TH350reverseVB.jpg]]
 
[[file:TH350reverseVB.jpg]]
  
==Governor==
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=Governor=
 
Image below of an OEM T-350 governor and cover.  
 
Image below of an OEM T-350 governor and cover.  
  
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[[File:B&M Governor recalibration kit.jpg|thumb|300px|left|B&M governor recalibration kit.]] <br style="clear:both"/>
 
[[File:B&M Governor recalibration kit.jpg|thumb|300px|left|B&M governor recalibration kit.]] <br style="clear:both"/>
  
==Filter==
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=Filter=
 
Brass screened filter allows for more flow. Avoid the cloth looking material filters for the T-350
 
Brass screened filter allows for more flow. Avoid the cloth looking material filters for the T-350
  
 
[[file:TH350HPfilter.jpg]]
 
[[file:TH350HPfilter.jpg]]
  
==Vacuum modulator==
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=Vacuum modulator=
  
 
The vacuum modulator senses vacuum in the intake manifold as an indicator of engine load. As the throttle is opened, vacuum decreases. The modulator on the transmission will raise the main line pressure in the transmission
 
The vacuum modulator senses vacuum in the intake manifold as an indicator of engine load. As the throttle is opened, vacuum decreases. The modulator on the transmission will raise the main line pressure in the transmission
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[[File:T-350_modulators.jpg|thumb|300px|left|Two types of modulators shown. Low vacuum design on left, ID by the black and red strips. It is larger diameter too]] <br style="clear:both"/>
 
[[File:T-350_modulators.jpg|thumb|300px|left|Two types of modulators shown. Low vacuum design on left, ID by the black and red strips. It is larger diameter too]] <br style="clear:both"/>
  
==Fastener size and torque values==
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=Fastener size and torque values=
  
 
*Pump Cover to Pump Body- (5/16-18) 15 ft/lb
 
*Pump Cover to Pump Body- (5/16-18) 15 ft/lb
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*Intermediate Band Adjust Nut- 15 ft/lb
 
*Intermediate Band Adjust Nut- 15 ft/lb
  
==T-350 dimensions and tailshaft (extension housing) lengths==
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=T-350 dimensions and tailshaft (extension housing) lengths=
  
 
[[File:TH350 dimensions.jpg|thumb|left|400px|]]<br style="clear:both"/>
 
[[File:TH350 dimensions.jpg|thumb|left|400px|]]<br style="clear:both"/>
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[[File:3504WD output.jpg]]
 
[[File:3504WD output.jpg]]
  
==Gear ratios==
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=Gear ratios=
  
 
Ratios of the T-350 were consistent throughout its production:
 
Ratios of the T-350 were consistent throughout its production:
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*Reverse- 1.93:1  
 
*Reverse- 1.93:1  
  
==Aftermarket parts==
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=Aftermarket parts=
  
 
*An aftermarket low-gear planetary is available that will lower the first gear ratio to 2.75:1.
 
*An aftermarket low-gear planetary is available that will lower the first gear ratio to 2.75:1.
  
  
==Reference material==
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=Reference material=
  
 
[[File:Sessions- ATSG-Haynes manuals.jpg|thumb|600px|left|Left to right: [http://www.amazon.com/Turbo-Hydra-Matic-350-Handbook-Sessions/dp/0895860511 Turbo Hydra-Matic 350 Handbook] by Ron Sessions; [http://www.northernautoparts.com/ProductModelDetail.cfm?ProductModelId=786 ATSG manual] p/n 44400; Haynes [http://www.amazon.com/gp/product/1563924234/ref=pd_lpo_k2_dp_sr_1?pf_rd_p=486539851&pf_rd_s=lpo-top-stripe-1&pf_rd_t=201&pf_rd_i=0895860511&pf_rd_m=ATVPDKIKX0DER&pf_rd_r=0J4A1QHT1Y8B032P3Z6P GM Automatic Transmission Overhaul] manual, p/n 10360.]] <br style="clear:both"/>
 
[[File:Sessions- ATSG-Haynes manuals.jpg|thumb|600px|left|Left to right: [http://www.amazon.com/Turbo-Hydra-Matic-350-Handbook-Sessions/dp/0895860511 Turbo Hydra-Matic 350 Handbook] by Ron Sessions; [http://www.northernautoparts.com/ProductModelDetail.cfm?ProductModelId=786 ATSG manual] p/n 44400; Haynes [http://www.amazon.com/gp/product/1563924234/ref=pd_lpo_k2_dp_sr_1?pf_rd_p=486539851&pf_rd_s=lpo-top-stripe-1&pf_rd_t=201&pf_rd_i=0895860511&pf_rd_m=ATVPDKIKX0DER&pf_rd_r=0J4A1QHT1Y8B032P3Z6P GM Automatic Transmission Overhaul] manual, p/n 10360.]] <br style="clear:both"/>

Revision as of 14:31, 29 March 2012

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