Withdrawal
1. Remove the drip tray as described in paragraph 15.
ADP, ADR, AFY, AEB and AJL engines
2. On these engines, the oil pump is driven from the auxiliary shaft.
3. On ADP engines, support the left and right subframes with a rolling jack, laying a piece of board between it and the subframes. Mark the position of the subframes to maintain the wheel alignment after assembly. Turn away bolts of fastening of subframes. First you need to unscrew the two front bolts, then unscrew the rear ones. Lower the subframes together with the anti-roll bar to the floor.
4. Remove the oil baffle plate at the bottom of the crankcase.
5. Unscrew the bolts with a hexagon and remove the oil receiver from the oil pump. Remove the sealing ring.
6. Turn out big bolts of fastening of the oil pump to the block. If necessary, pull the subframe down to provide enough room to remove the oil pump.
7. Turn away two bolts and remove a cover. Please note that a pressure reducing valve is installed in the lid.
AHL engines
8. On AHL engines, the oil pump is driven by a chain from the crankshaft toe.
9. Remove the oil baffle plate in the lower part of the cylinder block.
10. Remove the three mounting bolts and remove the oil pump from the crankcase bushings. Unhook the oil pump drive gear from the chain and remove the pump together with the oil receiver from the engine. The tensioner will try to tension the chain, preventing removal, you may need to use a screwdriver to hold it in a compressed position.
11. Turn away bolts of fastening of a flange and remove maspopriemnik from the pump. Remove the sealing ring. Loosen the mounting bolts and remove the cover from the oil pump.
12. Check for wear or damage to the drive chain. To remove the chain, you must first remove the timing belt, as described in paragraph 4, then unscrew the bolts securing the front oil seal housing to the cylinder block. After removing the housing, dismantle the chain tensioner, unhook the chain from the sprocket on the crankshaft toe.
Examination
13. On ADP, ADR, AFY, AEB and AJL engines, clean components and inspect for wear or damage. Using a feeler gauge, measure the clearance between the gears and compare it with the data given in Specifications. Measure the axial clearance in the same way by placing a steel ruler on the pump casing. If the clearances are out of range, the pump must be replaced. If the gaps "in tolerances", install the cover and tighten the bolts of its fastening.
14. On ANL engines, thoroughly clean the pump and check for wear or damage to the gear teeth. A puller will be required to remove the sprocket from the crankshaft nose, however, note that the sprocket must be heated to 220°C for 15 minutes to install the sprocket. Note also that the wide ring on the sprocket must face the engine. To remove the sprocket from the oil pump, unscrew the mounting bolt and pull it off. Please note that the sprocket is installed in only one position. Check the pump gears for wear and damage. If wear is obvious, replace the pump.
Installation
15. Fill the pump with oil by pouring it into the oil receiver hole and rotating the drive shaft.
ADP, ADR, AFY, AEB and AJL engines
16. Clean the mating surfaces, install the cover on the pump and tighten the bolts to the specified torque.
17. Clean the pump and the block, attach the pump, wrap the mounting bolts and tighten them to the prescribed torque.
18. Install a new o-ring on the end of the oil receiver tube. Install the oil receiver on the pump, wrap the bolts and tighten them.
19. On ADP engines, install the subframes and tighten their fastening bolts to the prescribed torque, as described in chapter 10.
20. Install the drip tray as described in paragraph 15.
AHL engine
21. Install the cover on the oil pump and securely tighten the mounting bolts.
22. If the chain was removed, as well as the crankshaft sprocket and tensioner, postpone their installation until the oil pump is installed on the cylinder block. If they were not removed, use a screwdriver to depress the tensioner, overcoming the resistance of the spring, to loosen the chain and install the pump.
23. Install the pump on the bushings, wrap and tighten the three mounting bolts to the prescribed torque. If necessary, align the pump sprocket with the chain.
24. If necessary, install the clamping chain, crankshaft sprocket and tensioner in the reverse order of removal.
25. If necessary, install the crankshaft on the housing with the front oil seal. Apply a suitable sealant before installing the housing.
26. Install the baffle plate on the pallet as described in paragraph 15.
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