GM 12633906
Timing Cover

To replace the Timing Cover, first gather the necessary tools: front and rear cover alignment tool (J 41476). The initial steps involve removing the Water Pump then proceeding with the crankshaft balancer removal. Remove the front cover bolts and the Oil Pan-to-Timing Cover bolts. Extract the Timing Cover together with the gasket before discarding the current gasket material. Thoroughly examine the Timing Cover after cleaning it if required. You must replace the crankshaft oil seal and the Timing Cover gasket with new parts and refrain from using any gasket sealant until specified by the instructions. When assembling replace the crankshaft front oil seal properly against the crankshaft to stop premature wear and leaking. All surfaces of the gasket must be clean from oil or foreign materials. Attach a 5 mm (0.20 inch) long bead of gm p/n 12378190 sealant or equivalent material that measures 20 mm (0.80 inch) in total length to the junction between the engine block and Oil Pan. Start by mounting the new Timing Cover gasket and cover before tightening the Timing Cover and Oil Pan-to-Timing Cover bolts with caution against over-torque. Align the tapered legs of the front and rear cover alignment tool (J41476) with the machined surfaces on the Timing Cover. Tighten the Oil Pan to Timing Cover bolts to 25 nm (18 ft. Lbs.) apply 25 nm of torque (18 ft. Lbs.) when installing the Timing Cover bolts as well as the Oil Pan-to-Timing Cover bolts. Add the new crankshaft front oil seal before reinstalling the Water Pump.

Start the engine front cover replacement process by obtaining the front and rear cover alignment tool (J 41476) alongside other required instruments. Start your work by taking out the Water Pump followed by the crankshaft balancer before moving to the Oil Pan-to-front cover bolt removal. Start by uninstalling the front cover bolts before you take off the front cover and its gasket which must be discarded. Follow these steps when cleaning and inspecting the engine front cover: discard both the crankshaft oil seal and front cover gasket and do not use any sealant on the front cover gasket unless mandated. Watco gm U.S. P/N 12378190 or equivalent sealant should be applied as a 5 mm (0.20 inch) bead along the Oil Pan to engine block junction before adding the new front cover gasket and cover. Torque the front cover bolts as well as the Oil Pan-to-front cover bolts until they feel snug without exceeding the torque limits. Use the front and rear cover alignment tool (J 41476) to guide the tapered legs that match the machined alignment surfaces found on the front cover. Use the crankshaft balancer bolt as the starting point to perform final tightening of Oil Pan to front cover bolts alongside engine front cover bolts with a torque of 25 nm (18 ft. Lbs.). Reinstall the Water Pump after installing a fresh crankshaft front oil seal through the removal of the front cover alignment tool (J 41476).

The servicing process of a Timing Cover starts with air intake duct removal and air cleaner assembly and then moves to crankshaft balancer removal. The service begins by emptying the cooling system followed by heater and Radiator hose removal from the Water Pump. Start by taking out the Water Pump combined with its bolts and gaskets. Avoiding damage to the Oil Pan Gasket is essential when you glide the front cover/gasket across it. After removing the front cover-to-engine block and front cover-to-oil pan bolts you should separate the front cover from the Oil Pan while discarding the gasket. Clear the front oil seal from the crankshaft that resides inside the cover. Then dispose of both parts. To achieve correct crankshaft front oil seal positioning during installation you must use the front/rear cover alignment tool (J 41476) to position the seal squarely with the crankshaft. Seal the engine block to Oil Pan interface with gm p/n 12378190 sealer to a 5 mm (0.20 inch) thickness before securing the new front cover along with its gasket and bolts while leaving them finger-tight. Use the j 41476 tool's tapered legs to place them onto the machined alignment surfaces on the front cover. First position the cover at the pan rail by tightening the Oil Pan-to-cover bolts then install the crankshaft balancer bolt until it meets initial resistance. Tighten Oil Pan-to-front cover bolts to 25 nm (18 ft. Lbs.) while the front cover bolts require a torque of 25 nm (118 ft. Lbs.). After extracting the j 41476 from the front cover's surface position the front crankshaft oil seal in its place. You should install the crankshaft balancer followed by a Water Pump assembly along with gaskets and bolts. After connecting hoses to the Water Pump you should reinstall the air intake duct and air cleaner assembly followed by filling and inspecting the cooling system for any leakage.

The engine front cover replacement process begins by removing the Water Pump followed by the crankshaft balancer and Oil Pan-to-front cover bolts and front cover bolts. After that detach the front cover with its gasket which needs to be discarded. Thorough cleaning followed by a detailed inspection must be performed on the engine front cover. Do not use a medicine crankshaft oil seal or front cover gasket again and avoid using sealants on the front cover gasket without explicit instructions. You need to check every gasket surface for oil or foreign matter before setting the crankshaft front oil seal correctly on the crankshaft to stop early wear and oil leakage. Sealant gm p/n 12378190 (equivalent option) should be applied as a 5 mm (0.20 inch) bead extending 20 mm (0.80 inch) along the Oil Pan to engine block junction before installing the front cover gasket and cover. Apply gentle torque to the front cover bolts along with Oil Pan-to-front cover bolts while avoiding excessive tightening. Use the j 41476 front and rear cover alignment tool (J 41476) to correctly position the front cover with its tapered legs matching the machined surfaces. Apply 25 nm torque (18 ft. Lbs.) to Oil Pan to front cover bolts and engine front cover bolts before removing the j 41476 alignment tool. Put new crankshaft front oil seal and Water Pump as the final steps.

The tools required to service and repair the Timing Cover includes: front and rear cover alignment (J41476). The main gas engine acknowledges such along with beginning by removing the Water Pump and followed it by a Crankshaft balancer from the Crankshaft and engine front cover. Clean all parts and inspect them all. It is worth noting that reinforcement oil seal or front cover gasket is not to be reused, also avoid sliding the front cover/gasket across the Oil Pan Gasket. Apply a 5 mm (0.20 inch) bead of gm p/n 12378190 at the corner the oil pan meets the engine block. Mount the front cover, gasket and bolts onto the engine by tighting the cover bolts fringer tightly without excessive tightenning. Mount the j41476 tool onto the machined alignment surfaces on the front cover to center the Crankshaft front oil seal with respect to the Crankshaft to prevent early oil seal wear and engine assembly oil leaks due to inadequate alignment. Install the Crankshaft balancer bolt, torquing it hand until tight before hand-tightening the oil pan-to-cover bolts to align the cover on the pan rail. Perform oil pan-to-front cover bolt and front cover bolt torque sequence to 25 n.m (18 lb ft). Having removed the j41476 for the front cover, place the front Crankshaft oil seal into place, attach the Crankshaft balancer to the Crankshaft, followed by reinstallation of the Water Pump.

To replace the engine front cover, first, consult the tools you will need (J41476) front and rear cover alignment tool). Start by taking out the Water Pump then do the crankshaft balancer. Next, remove the oil pan-to-front cover bolts and the front cover bobs then take out the front cover and gasket, throwing away the old gasket. If necessary, clean and check the engine front cover. When installing the new cover, do not reuse the crankshafts oil seal or front cover gasket and do not seal the gasket by using any kind of sealant unless it is instructed. Apply a 5 mm (0.20 inch) length of gm p/n 12378190, or equivalent, 20 mm (0.80 inch) long sealant to the oil pan to the engine block juncture and then place the front cover gasket and cover. Ensure the front cover bolts are tightened snug without over-tightening oil pan-to-front cover bolts until snug. By using a j41476, you should center the crankshaft front oil seal, bring the tapered legs in line with the machined surfaces of the front cover. Mount the crankshaft balancer bolt until it is snug, tighten oil pan to front cover bolts to 25 nm (18 ft. Lbs.), and the engine front cover bolts to 25 nm (18 ft. Lbs.). Following the removal of the j41476, put in a new crankshaft front oil seal and now, re-attach the Water Pump.

First, to replace the engine front cover, remove the Water Pump and the crankshaft balancer, then the bolts in the front cover. Next, remove the front cover and gasket, and throw away the used one. In case needed, clean and inspect the engine front cover. Reusing crankshaft oil seal or front cover gasket is important and no sealant is to be applied to the front cover gasket unless instructed. Check that the crankshaft front oil seal is properly centered against the crankshaft because an improperly aligned front cover will cause premature front oil seal wear and increase engine oil leaks. I apply a 5mm (0.20 in) long line 20mm (0.80 in) long sealant gm p/n behind 12378190 or equivalent at the Oil Pan junction to engine block. Place the front cover gasket and cover and tighten the front cover bolts and Oil Pan-to-front cover bolts without over-tightening. Assist with aligning the tapered legs on the machined alignment surfaces on the front cover by using the front and rear cover alignment tool j- 41476. Secure the Oil Pan to front cover bolts and the engine front cover bolts with a torque of 25 nm (18 ft. Lbs.). .removefrom your engine, you need to strip off, andalement a new crankshaft front oil seal, then reinstall the Water Pump.

To replace the engine front cover, first, you need to gather the necessary tools: front and rear cover alignment (J 41476). Start by detaching the Water Pump, followed by crankshaft balancer and then, the Oil Pan-to-front cover bolts. Next, unscrew the bolts on the front cover and remove the front cover with the gasket, discarding the old one. Clean and inspect the engine front cover, always take away the crankshaft oil seal and front cover gasket never reuse, take away any sealant away from the front cover gasket unless shown. You must apply a 5mm (0.2 inch) long beeaded seala nt gm p/n 12378290 or equivalent at the Oil Pan to engine block junction 20mm (0.8 inch) long. Mount a new front cover gasket and cover, fastening the front cover bolts and Oil Pan-to-front cover screws lightly without over-tightening. Use front and rear cover alignment (J 41476) to insert the crankshaft front oil seal, aligning it with the tapered legs to the machined surfaces on the front cover. Retighten Oil Pan to front cover bolts and engine front cover bolts to 25 nm 18 ft. Lbs. Next uncredited protection tool. Lastly, install a new crankshaft front oil seal and a Water Pump.

Remove the drive belt tensioner and the water pump pulley bolts, then take off the water pump pulley.

Disconnect the purge vent hose.

Remove the engine front cover studs and bolts, followed by the engine front cover and gasket.

Begin by draining the engine oil and coolant.

Take out the battery cable channel bolt and reposition the battery cable channel.

Tighten the coolant pump bolts to 15 Nm (11 ft. lbs.) and use the J 36660-A to torque them an additional 80 degrees.

Tighten them to 25 Nm (18 ft. lbs.).

Remove the crankshaft balancer and the water pump.

Tighten until snug, ensuring not to overtighten.

Use the J41476 to align the front cover, ensuring the tapered legs align with the machined surfaces.

Ensure the crankshaft position sensor is fully seated in the engine front cover crankshaft position sensor bore to prevent erratic engine operation.

Tighten them until snug, ensuring not to overtighten.

Apply a 5 mm (0.20 inch) bead of sealant GM U.S. P/N 12378190, or equivalent, 20 mm (0.80 inch) long to the oil pan to engine block junction.

Lower the cover over the dowel pin to rest on the sealant.

Remove the oil pan-to-front cover bolts and the front cover bolts, then take off the front cover and gasket, discarding the old gasket.

Install the engine shield and bolts, tightening them to 20 Nm (15 ft. lbs.).

The tapered legs must align with the machined surfaces.

Until snug without overtightening.

Remove the CKP sensor bolt and sensor, and discard the CKP sensor O-ring seal.

Tighten the oil pan to front cover bolts and engine front cover bolts to 25 Nm (18 ft. lbs.).

Reposition the battery cable channel and tighten the battery cable channel bolt to 9 Nm (80 inch lbs.).

Install the Front and Rear Cover Alignment Tool (J 41476) to the front cover, aligning its tapered legs with the machined surfaces.

Avoid applying any sealant to the front cover gasket unless specified.

Reinstall the water pump.

Center it in relation to the crankshaft to prevent premature wear and oil leaks.

Remove the front cover bolts and discard the front cover, ensuring to clean all sealing surfaces before installing a NEW front cover.

Reinstall the oil pan, crankshaft balancer, and water pump.

Clean and inspect the engine front cover, ensuring all gasket surfaces are free of oil or foreign material.

Use the Front and Rear Cover Alignment tool (J41476).