Note: The following procedure applies only to F3R 750, F3R 751, F3R 710 gasoline engines and F8Q 620, F8Q 784 F9Q 730 diesel engines.
Note: Installation will require a new timing belt, intermediate shaft seal, and housing gasket (or a suitable sealant) and the sealing ring of the protective cover of the oil pump drive gear.
Intermediate shaft components
Removal
1. After removing the engine from the vehicle, proceed as follows.
2. Remove the toothed drive belt.
3. Remove the intermediate shaft toothed pulley.
4. Unscrew and remove the lower inner timing belt cover.
5a. Unscrew the four bolts and remove the intermediate shaft casing (refer to the illustrations), then remove the gasket (if any). Note that the casing is located on two pins.
6a. Remove the two bolts and remove the oil pump drive gear protective cover, noting the location of the sealing ring.
6b. Remove the pinion gear. Use a screwdriver or suitable hook to remove the pinion gear (refer to the illustrations).
7a. Remove the two bolts and washers and lift the support plate
7b. Unscrew the intermediate shaft (refer to the illustrations).
Inspection
1. Inspect the intermediate shaft and oil pump drive shaft for corrosion, scratches or wear ridges on the bearing journals and gear teeth. Replace components as necessary. Check the intermediate shaft bearings in the cylinder block for wear and, if worn, contact a Renault workshop for replacement.
2. Temporarily install the support plate on the intermediate shaft and use a feeler gauge to check that the axial clearance corresponds to the data given in the Specifications (refer to the accompanying illustration). If it is greater than the maximum allowable deviation, a new support plate must be installed, but first check the thrust surface on the shaft.
Installation
1. Clean the intermediate shaft housing and remove the oil seal using a screwdriver.
2. Install the new seal in place with the open side facing the engine so that it is flush with the outer surface of the housing (refer to the illustrations).
3. Generously lubricate the intermediate shaft and insert it into place.
4. Position the support plate with the curved edge away from the crankshaft and install the two mounting bolts.
5. Place the new gasket on the pins in the cylinder block (refer to the accompanying illustration). If the gasket has not yet been used, apply CAF 4/6Q THIXO sealant to the housing mating surface.
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6. Wrap the end of the intermediate shaft with adhesive tape to prevent damage to the oil seal. Generously lubricate the sealing lips of the oil seal, then install the housing into place by sliding it onto the pins (refer to the accompanying illustration). Install and tighten the mounting bolts. Remove the tape from the end of the shaft.
7. Lubricate the oil pump drive gear and insert it into place. Check that the grooves on the oil pump drive gear are correct and replace it if necessary. Replace the cover and secure it with two bolts.
8. Install the lower inner timing belt cover.
9. Install the intermediate shaft toothed pulley.
10. Install the new timing belt.