GM 24232325
Extension Housing Seal, Rear

First raise the vehicle and remove the Transfer Case assembly as the first step to replace the input shaft seal in the Transfer Case. Guard the Transfer Case sealing components as well as shafts during seal removal by ensuring to avoid damage which could result in fluid leakage or force component replacement. A flat-bladed screwdriver allows the front input shaft seal removal from the Transfer Case before extraction. The new input shaft seal should be placed onto the input shaft before you install it with the j 42733 seal installer (J 42733). Reinstall the Transfer Case assembly while inspecting the Transfer Case fluid level and finally lower the vehicle.

The process of replacing front transfer case output shaft seals on trail blazer, envoy, rainier and bravada models begins with vehicle elevation along with removal of the available fuel tank shield. Separated attachment of the front propeller shaft and dust shield occurs from the front output shaft. The removal of the front output shaft seal requires a screwdriver to softly tap the edge until the seal can be pried out from the transfer case. After that, extract the seal. To install the front output shaft seal, the j 45236 output shaft seal installer must be used with correct alignment of the front output shaft seal on the tool itself. Implement the j 45236-1 to install the front output shaft seal before taking out j 45236-1 and j 45236-2. First put the front output shaft dust shield in place then install the front propeller shaft after that. Conclude by checking the transfer case fluid level then reinstall the fuel tank shield if present next to lowering the vehicle.

First replace the rear transfer case shield if present before you proceed with removing the rear propeller shaft for transfer case output shaft seal replacement. Before sealing replacement you need to remove and examine the rear output shaft bushing for signs of damage by scoring or wear. You can use the transfer case rear bushing remover and installer tool (J 45380) to remove the rear output shaft bushing by installing its finger section before the bushing and then using the tube and forcing screw to install it. The wrench on the forcing screw removes the bushing. The installation process requires the transfer case rear bushing remover and installer (J 45380) to position the bushing and tool toward the case before hammering it into place with the drain hole of the rear output shaft seal aimed downward toward the ground. You should finish the procedure by using the seal installer (J 37668-A) to apply a new front output shaft seal while reinstalling the rear propeller shaft followed by checking and possibly top-off the fluid level then reinstalling the transfer case shield if present.

The first step for Transfer Case input shaft seal replacement includes raising a vehicle. Properly remove the Transfer Case assembly without damaging either the Transfer Case sealing surfaces or shafts during seal prying which could result in leakage that requires replacement of defective components. Place the new seal onto the input shaft with its part numbers directed toward the technician before installation. The j 42738 seal installer helps technicians implement the Transfer Case input shaft seal properly with the Transfer Case surface at exactly the same height. After placing the Transfer Case assembly back it is essential to check the Transfer Case fluid level before lowering the vehicle.

The repair on trailblazer ext and envoy xl vehicles and envoy xuv requires vehicle elevation before commencing. Start by disassembling the shield from the transfer case before moving on to the front propeller shaft. Seek out the front output shaft dust shield then tap a screwdriver gently against the seal's edge to release it from the front output shaft. The output shaft seal installer (J 45236) helps with front output shaft seal installation by using the j 45236-2 to align the seal then applying the j 45236-1 to perform the actual installation. Reinstall the dust shield on the front output shaft followed by both j 45236-1 and j 45236-2 then replace the front propeller shaft. The procedure ends with inspection of transfer case fluid level and (if equipped) transfer case shield reinstallation and vehicle lowering procedure.

First step to replace the input shaft seal is to detach the Transfer Case from the vehicle. The procedure requires a sharp punch to make a seal opening prior to using the output shaft oil seal remover (J 36825). Use of the slide hammer with bearing adapter (J 23907) together with output shaft oil seal remover (J 36825) will help to extract the input seal. Please install the new input shaft seal with the front output shaft seal installer (J 42738) which is followed by reinstallation of the Transfer Case.

The procedure to replace rear output shaft seal starts with suitable vehicle support and correct vehicle lifting. Users must remove the transfer case shield first when present alongside the rear propeller shaft. A flat-tipped screwdriver can be used to pry the rear output shaft seal until removal. The j 45756 output shaft seal installer should be used for new front output shaft seal installation. Reinstallation of the rear propeller shaft should follow before checking for correct fluid levels with possible fluid addition if needed. Close the procedure by reinstalling the transfer case shield (when applicable) then put down the vehicle.

Vehicle elevation is the first step to replace the front transfer case output shaft seal on trailblazer ext and envoy xl models. Start by removing the transfer case shield when present then the front propeller shaft followed by the dust shield which protects the front output shaft. Use a screwdriver to provide gentle tapping pressure along the edge of the front output shaft seal until it becomes loose enough for tooling out using a pry. The front output shaft seal replacement requires the output shaft seal installer (J45236) with the front output shaft seal positioned on the j45236-2. The j45236-1 can be used to set the front output shaft seal after which both j45236-1 and j45236-2 should be discarded. After installing the front output shaft dust shield the next step should be mounting the front propeller shaft. Test the transfer case fluid level before replacing any shields that might be present and then lower the vehicle.

Remove the transfer case assembly while ensuring not to damage the sealing surfaces of the transfer cases or the shafts.

Use a flat-tipped screwdriver to remove the input shaft seal.

Use the same tool (J 45380) to position and install the bushing, ensuring the drain hole on the boot of the rear output shaft seal faces down.

Remove the transfer case input shaft seal.

After that, remove the transfer case rear output shaft seal.

Remove the rear output shaft seal and inspect the rear output shaft bushing for any scoring or wear.

Remove both the installer and protector from the output shaft.

Use the J 45380 to position and install the new bushing, ensuring the drain hole on the boot of the rear output shaft seal faces downward.

Remove both the installer and protector from the output shaft.

Take out the rear output shaft seal.

Use the Seal Installer (J 37668-A) to install the transfer case rear output shaft seal, reinstall the rear propeller shaft, check the transfer case fluid level, and lower the vehicle.

Reinstall the front propeller shaft, check the transfer case fluid level, and lower the vehicle.

Remove the rear propeller shaft.

Raise the vehicle and remove the transfer case from the adapter.

Reinstall the transfer case in the vehicle, check the transfer case fluid level, and then lower the vehicle.

It is positioned straight.

Raise and suitably support the vehicle.

Start with the inner sleeve of the seal to facilitate its removal from the transfer case, followed by the outer area of the seal.

Align the new input shaft seal on the input shaft and use the J 42738 Seal Installer to install the seal.

Remove the J 45236-1 and J 45236-2, then reinstall the dust shield and front propeller shaft.

Reinstall the rear propeller shaft and check the fluid level, adding fluid if necessary.

Attach the Output Shaft Seal Installer (J 43484) to the Driver Handle (J 8092).

Next, remove the transfer case assembly, taking care not to damage the sealing surfaces of the transfer cases or the shafts while prying the seals for removal.

First, raise the vehicle.

Use the J42738 Seal Installer (J42738) to install the input shaft seal in the transfer case.

Reinstall the rear propeller shaft, check the fluid level and add fluid if necessary, and finally, reinstall the transfer case shield if equipped.

First, raise the vehicle.

Install the front output shaft seal onto the protector and use the Front Output Shaft Seal Installer (J 44636-1) to properly install it.

Take out the transfer case front output shaft dust seal and the front output shaft seal.

Lightly tap a flat-bladed screwdriver around the edge and pry it from the transfer case.

Reinstall the rear propeller shaft, inspect the transfer case fluid level, and lower the vehicle.

Remove both the installer and protector from the output shaft.

Poke a hole in it with a very small punch and thread the J 36825 into the hole.

Use the J 45380 (Transfer Case Rear Bushing Remover and Installer).

Remove the transfer case from the adapter.

Use the J 45380 to install the bushing, attaching the finger section to the main body.

Reattach the transfer case assembly, inspect the transfer case fluid level, and lower the vehicle.

Remove both the installer and protector from the output shaft.

Avoid damaging the sealing surfaces of the transfer cases or the shafts, as this may cause leakage or necessitate replacement of the damaged component.

Use a flat-tipped screwdriver to pry back the inner race, then insert a small pry bar to remove the inner part of the seal.

Raise the vehicle and remove the transfer case shield.

Align the new input shaft seal on the input shaft and install it using the J 42738 (Seal Installer).

Raise the vehicle.

Install it with your fingers, then use the Output Shaft Seal Installer (J33843) to properly install it in the transfer case.

A two-piece internal seal, with the inner seal race being a force fit on the front output shaft.

First, raise the vehicle and, if equipped, remove the transfer case shields.

Use a flat-tipped screwdriver to pry the inner race forward, then insert a small pry bar to remove the inner part of the seal.

Output Shaft Seal Installer (J 43484) and Driver Handle (J 8092).

The J 23907 (J 23907 Slide Hammer with Bearing Adapter) and the J 36825 (J 36825 Output Shaft Oil Seal Remover) are used together.

Install the new rear output shaft seal into the transfer case using your fingers, then utilize the Output Shaft Seal Installer (J 37668-A) to properly install the seal.

Utilize the Slide Hammer with Bearing Adapter (J 23907) and the Output Shaft Oil Seal Remover (J 36825) to remove the input seal.