Question 1

How to replace the Differential Seal in a rear differential on Toyota Land Cruiser?

Accepted Answer

To replace the timing belt, begin by removing the front wheel RH, front fender apron seal RH, V (cooler compressor to crankshaft pulley) belt No.1, vane pump V belt, engine moving control rod, engine mounting stay No.2 RH, generator bracket No.2, and crankshaft pulley using Special Service Tool: 09213-54015 (91651-60855), 09330-00021 to loosen the pulley bolt and Special Service Tool: 09950-50013 (09951-05010, 09952-05010, 09953-05010, 09954-05030) to remove it, ensuring to apply lubricating oil on the threads and tip of the center bolt 100 before use. The procedure begins with removing the engine wire protector clamps to take off 5 bolts then remove timing belt guide No.2 and engine mounting bracket RH, timing belt No.1 cover, timing belt No.2 cover and the timing belt itself. Next, set the No. 1 cylinder to TDC/compression to temporarily install the crankshaft pulley bolt with the washer while turning the crankshaft clockwise to align timing marks before checking the camshaft timing pulleys alignment. To reuse the timing belt maintain its original installation marks until measurement or mark them you will use for reference before removing it. Set the No. 1 cylinder to approximately 60° BTDC/compression position. Set the No. 1 cylinder to TDC/compression at approximately 60. BTDC before removing the belt tensioner without activating its plunger due to the necessity for proper crankshaft pulley orientation. The installation of the new timing belt requires preventing any activity that would involve bending or twisting or contact with oil water or steam and maintaining clean pulleys. Install the crankshaft pulley bolt together with its washer followed by turning the crankshaft counterclockwise to about 60° while using Special Service Tool: 09960-10010 (09962-01000, 09963-01000) to correctly position the timing marks. The timing belt installation requires alignment of the front mark toward the front with the installation marks matching the pulley timing marks. Press in the push rod of the timing belt tensioner assembly using less than 9.8 kN (1,000 kgf, 2,205 lbs) force and line up the holes before securing it with two bolts at 27 Nm (280 kgf-cm, 20 ft. lbs.). Then check the timing marks after two crankshaft clockwise turns. The work proceeds with timing belt guide No.2 facing engine front and engine mounting bracket RH receiving torque of 28 Nm (286 kgf-cm, 21 ft. lbs.). Afterward, install timing belt No.2 cover with timing belt No.1 cover at 8.5 Nm (87 kgf-cm, 76 inch lbs.) yet be mindful to maintain gasket integrity. Prefinal installation adds the engine wire protector cover. Place the set key correctly then use Special Service Tools 09213-54015 (91651-60855), 09330-00021 at 220 Nm (2250 kgf-cm, 162 ft. lbs.) to install the pulley bolt while proceeding with installation of generator bracket No.2 at 28 Nm (286 kgf-cm, 21 ft. lbs.), engine mounting stay No.2 RH, engine moving control rod, vane pump V belt, V (cooler compressor to crankshaft pulley) belt No.1, inspect drive belt tension, and reinstall the front wheel RH.

Question 2

How to replace a Differential Seal in the front of a U151F on Toyota Sienna?

Accepted Answer

The front differential oil seal replacement (U151F) starts with front wheel removal and Engine Under Cover No.1 detachment along with automatic transaxle fluid draining through drain plug removal followed by gasket replacement and plug torque direction of 49 Nm (500 kgf-cm, 36 ft.lbs.). The differential side bearing retainer oil seal replacement process starts with removal of both the front drive shaft assembly LH and Special Service Tool: 09308-00010. Add new oil seal through Special Service Tools: 09223-15020 and 09950-70010 (09951-07150) followed by hammering the seal to reach a depth of 0 + 0.5 mm (0 + 0.020 inch) before coating its lip with MP grease. Install the front drive shaft assembly LH together with engine under cover No.1 and front wheel by applying torque of 103 Nm (1,050 kgf-cm, 76 ft. lbs.). The technician needs to check the automatic transaxle fluid while inspecting its condition along with verifying front wheel alignment and ABS speed sensor signals. The necessary procedure for additional disassembly includes removing both engine assembly with transaxle and front drive shaft assemblies LH and RH together with the transfer stiffener plate RH and automatic transmission with transfer and transfer assembly. Before installing the new oil seal with Special Service Tool: 09649-17010, 09950-70010 (09951-07200) to 6.0 plus or minus 0.5 mm (0.236 plus or minus 0.020 inch) depth apply MP grease on the seal's lip. The service procedure ends with the installation of the front drive shaft assemblies RH and LH along with the transfer assembly and automatic transmission with transfer and transfer stiffener plate RH using Special Service Tool: 09670-00010.

OEM Toyota Differential Seal

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