Compatible Alpina, BMW® N62 Model Year:- 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, Morgan Aero, Rolls-Royce, and Wisemann GT.
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The Coolant Transfer Pipe found deep inside this N62 V8 engine carries coolant from the Water Pump to cooling chambers within the engine. The rubber Front Seal on this Cooling Tube can fail within 40,000 miles and start seeping coolant through a weep hole in the Timing Chain Cover. The coolant leak from the engine will eventually cause overheating. Because accessing the N62 Coolant Leak Repair required disassembly of the engine in the past, which is a highly costly repair. The Timing Chain Cover had to be removed before the crossover Coolant Transfer Pipe could be replaced. Bimmerfix® Products Co., on the other hand, has developed a Groundbreaking method to stop the leak! The outdated procedures are significantly slower and more expensive than the BimmerFix BMW® N62 Coolant Pipe Repair Kit. The BimmerFix® Stent is inserted into the leaky crossover cooling tube through the Timing Chain Cover creating a simple yet sturdy and long-lasting metal liner inside the BMW® Coolant Pipe. The thin aluminum sleeve produces a long-lasting repair that is considerably easier and less costly to install than traditional procedures.
How to Repair the N62 Coolant Leak
After the water pump is removed, the BMW® N62 Leaking Antifreeze is fixed by the Bimmerfix stent installation is the same on all N62 engines, regardless of model.
Before moving to the installation, it is imperative to take note of certain measures-
· When working on a car, always take safety measures.
· Working on a hot car is never a good idea.
· Keep antifreeze out of the reach of children and pets.
· Antifreeze should be recycled whenever possible.
· Vehicles should only be lifted from permitted sites (Refer owner’s manual)
· When elevating the car, always utilize jack stands and block wheels.
Installing BimmerFix N62 Coolant Pipe Repair System
Step 1. When the engine is cold, remove the expansion tank cap from the coolant expansion tank to avoid burns.
Step 2. Remove the splash guard and release the radiator drain valve on the right side of the radiator, which is situated at the bottom of the radiator.
Step 3. Remove the engine and fan covers, as well as the air intake duct. Using a 32mm fan clutch wrench, remove the fan clutch.
Step 4. After releasing the 10mm water pump pulley nuts, remove the drive belt with a Torx socket.
Step 5. Remove the four 10mm bolts holding the water pump pulley in place.To access the water pump, remove any vacuum lines, coolant hoses, or sensor attachments.
Step 6. Five 10mm water pump mounting bolts should be removed. (While 04 mounting nuts are easier to remove, the 5th bolt because of its location gets difficult to be removed, but it can be removed after loosening the eight Torx bolts on the lower drive pulley and removing the upper drive belt tensioner.
There are four water pump mounting nuts that are simple to remove.
Because the fifth bolt is located behind the water pump, it is difficult to reach and remove because the access is restricted. iii) To get better access, remove the top drive belt tensioner and loosen the eight Torx bolts on the lower drive belt pulley. (Though the air conditioning belt Should Not be removed)
Step 7. Loosen the eight smaller bolts on the crankcase pulley. The big central bolt should not be removed.Remove the water pump by loosening the water pump nuts.
Step 8. Examine the coolant transfer pipe with your finger for blockages produced by the defective front seal.Clear any blockages that the defective coolant transfer pipe seal has produced. (Cut the edges of the old rubber seal that are protruding out into the pipe using a sharp knife.) Do not remove the old seal. Simply cut the rubber to allow the stent to freely glide into the coolant transfer pipe.
Step 9. Remove any loose portions of the old seal from within the coolant transfer pipe. To ensure that the new stent fits into place without any obstacles, it may be essential to sand down this casting mark. Sand down the casting mark and rough up the interior of the coolant transfer pipe with the sand rod.
Step 10. Elevate the front of the vehicle slightly so that any remaining coolant in the coolant transfer pipe drains to the back of the engine block and doesn't obstruct the cleaning or sealing process.
Step 11. In order to apply the sealant, clean the interior surfaces of the timing chain cover and coolant transfer pipe.
Step 12. Remove any loose debris and antifreeze that may still be in the coolant transfer pipe using a shop vacuum.
Step 13. Before applying the Bimmerfix Coolant Pipe Sealant, the cleaning rod can be sprayed with brake parts cleaner to ensure that the interior of the timing chain cover and the coolant transfer pipe are as clean and dry as possible.
Step 14. Place the stent in the timing chain cover and coolant transfer pipe while it is still dry. The stent should be able to move freely in and out. REMEMBER NOT TO FORCE THE STENT! Sand the casting mark until the stent can glide in and out freely without becoming tangled. The stent should be able to slide over the timing chain cover.
Step 15. Put on rubber gloves and squeeze the Bimmerfix coolant pipe sealant onto your index finger, pressing it into cracks and crevices around the coolant transfer pipe's internal rubber front seal. If a portion of the old rubber seal has fallen out, push the Bimmerfix Sealer Silicon into the groove of the old rubber seal until it is entirely packed with no air pockets or gaps. Apply sealant to the inner walls of the timing chain cover and the coolant transfer pipe so that it adheres to the inner walls.
Step 16. Using a sponge brush, thoroughly coat the inner passage of the timing chain cover and coolant transfer pipe with Bimmerfix Coolant Pipe Sealant. The brush should not be inserted past the red point on the handle.
Step 17. Apply sealant to the exterior of the stent, which is now ready to be installed. Make that the stent is inserted into the timing chain cover as well as the coolant transfer pipe. and make sure the stent is completely flush with the timing chain cover, with no gaps.
Step 18. Examine the pipe for any probable blockages created by extra sealant. Remove any obstructions. If this is not done, the engine may overheat, resulting in engine damage. To ensure that any obstruction has been cleared, use a clean sponge brush to remove any excess sealant immediately after placing the stent. Fill the sponge brush with water until it reaches the black mark on the handle.Clean off any coolant which is visible from the areas around the stent.
Step 19. Once the stent is free of any possible blockage, you may start reassembly immediately, but wait 24 hours before adding the coolant. During the reassembly process, add the bottle of Bimmerfix Cooling System Sealer and conditioner directly into the upper radiator hose before attaching the hose to the upper radiator inlet. DO NOT pour the bottle of Bimmerfix Cooling System Sealer and conditioner into the expansion tank. Or this could quag the smaller tubes that run off of the expansion tank.
Step 20. After the car has been reassembled, top off the antifreeze and drive it as usual, checking for any leaks. The stent would have corrected any severe internal engine leaks caused by the front seal. Smaller leaks from the valley pan or the rear coolant passage seal, on the other hand, might take up to 200 miles to completely seal.
The breakthrough innovation in BimmerFix N62 Coolant Pipe Repair System prevents the Coolant Pipe leak by simply removing the Water Pump. This new patent-protected technology can save you or your customer a lot of time, effort, and money.