OEM Chevrolet HHR Timing Chain Tensioner

Chevrolet HHR Timing Chain Tensioner Parts Questions & Experts Answers

• Tensioner, Driver Side
  12608580
  Q: How to replace the timing chain tensioner on Chevrolet HHR?

  A: The replacement of timing chain tensioners starts with removing the negative Battery Cable. Begin by taking off the camshaft cover then the Timing Chain Tensioner before removing the tensioner's seal. Check the Timing Chain Tensioner along with its o-ring seal and washer for damage. Replace them as necessary. Check the length of the Timing Chain Tensioner assembly between both points. The tensioner system demands new components at their fully compressed non-active state which should measure 72 mm (2.83 in) (a) when compressed and 85 mm (3.35 in) (a) when active. To measure the compressed state of the Timing Chain Tensioner begin by removing its Piston assembly from the tensioner body then position the j 45027-2 into a vise and place the notched Piston end into the j 45027-2 . The operation of the ratchet cylinder into the Piston requires a j 45027-1 tool. Detach the tensioner body to inspect inside the bore for contamination and structural destruction. Clean it with a lint-free material if needed. A lint-free cloth helps clean the surface when needed. Place the compressed Piston assembly into the Timing Chain Tensioner body so it reaches the bore's lowest point but avoids touching the bottom. The tensioner should reach a length of 72 mm (2.83 in) (a) between both ends. Do the previous procedures again if the measurement does not match the specifications. Thoroughly remove all dirt and debris from the threaded hole in the cylinder head which receives the Timing Chain Tensioner. The torque procedure requires proper placement of the Timing Chain Tensioner seal to stop oil leakage. Put the Timing Chain Tensioner assembly into place then tighten it to 75 n.m (55 lb ft). Apply force to the tensioner while it is compressed by 2 mm (0.079 in) to unlock its locking mechanism. A suitable tool with a rubber tip should deliver a sharp jolt that goes diagonally downwards through the cam drive chest to disengage the tensioner. The process ends with reinstalling of the camshaft cover followed by reconnecting the negative Battery Cable.