SKF Timing Belt Kits - SKF.com

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Setting up automatic tensioners: a typical example Timing belt tensioner 1. Allow the engine and tensioner to stabilize to the same relative ambient temperature before installing a tensioner for proper belt tension adjustment. Do not attempt to install a cool tensioner onto a hot engine or vise versa. 2. Rotate both the crankshaft and camshaft clockwise to TDC (top dead center) position (i.e. #1 cylinder firing position) and remove the timing belt. This defined position is to be the position where there is no action (positive or negative) from the camshaft or other sprockets. One should find no sudden movement or abrupt action from either of the sprockets. 90 Generally, cam and crankshaft sprockets have to line up with equivalent markings on the engine block to indicate TDC. Initial setup of the TBT (timing belt tensioner) 3. Place a new tensioner onto the engine. Tensioner’s anti-rotation fingers should fit over the guiding nut on the engine. 4. Rotate the installation shaft washer until the hex hole is pointing at the 5 o’clock position then hand tighten the M8 mounting bolt (see Figure 1). Hand tighten mounting bolt Figure 1 Pointer in free arm position Hex hole Guide nut Installation of the TBT 5. Install the timing belt being careful to engage the appropriate teeth of all the corresponding sprockets as per drive layout (see Figure 2). (Caution: Do not disturb the position of the crankshaft or camshaft sprockets during this procedure.) Anti rotation fingers Figure 2 Installation washer plate Tensioner Water pump Camshaft Crankshaft
Setting up automatic tensioners: a typical example 6. Rotate the installation shaft washer clockwise with a hex key. Make sure to hold the mounting bolt with a wrench in order to prevent it from turning when rotating the installation shaft washer. The tensioner assembly will move against the belt and the arm will eventually start to move clockwise (see Figure 3). Figure 3 Spanner/Wrench Hexagonal key Mounting bolt Hexagonal key Mounting bolt Spanner/Wrench Figure 4 Nut torque 19±3 Nm 7. Continue rotating the installation shaft washer until the arm pointer is positioned within the nominal position window on the base plate, then lock the tensioner in this position by tightening the mounting nut with 19±3 Nm or torque (see Figure 4). Verification of the nominal position 8. Remove both the hex key and the wrench. Rotate the crankshaft two (2) complete revolutions manually for proper seating of the belt until the crankshaft is repositioned at the TDC position. Note: Repositioning the crankshaft to the TDC position must be done only during the clockwise rotation. 9. Check the position of the arm pointer. - If the arm pointer still remains within the nominal position window, the installation is complete. - If not, go to step #10. The installation needs to be repeated until the proper position is achieved. Readjustment 10. Engage the hex key and retain its position while loosening the mounting bolt with the wrench. The mounting bolt and the tensioner do not need to be removed. Rotate the installation shaft washer counterclockwise with the hex key until the arm pointer returns to the free-arm position (see Figure 1). Follow steps 5 through 9. Pointer in installed position Final setting tolerance 91
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Catalog 457702 2010 SKF Timing Belt
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Belt tensioner unit (TBT) The belt
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How to use this catalog This catalo
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Engine drive systems Technology and
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Engine drive systems Variations of
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Engine drive systems Cooling system
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Engine drive systems Metal idler, w
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Failure analysis overview 90% of en
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Failure analysis overview Tensioner
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Failure analysis overview Water pum
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SKF Timing kits Application install
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SKF Timing kits Application install
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Abbreviation list ABS ............
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Manufacturer to model index Manufac
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Passenger cars, light & medium truc
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Page 43 and 44: Passenger cars, light & medium truc
Page 55 and 56: Timing belt kit contents TBK014P DE
Page 57 and 58: Timing belt kit contents •TBK101P
Page 59 and 60: Timing belt kit contents •TBK145W
Page 61 and 62: Timing belt kit contents •TBK165A
Page 65 and 66: Timing belt kit contents TBK214P DE
Page 79 and 80: Belt performance and quality Timing
Page 81 and 82: Belt specifications SKF No. Width L
Page 83 and 84: Belt specifications SKF No. Width L
Page 85 and 86: Timing belt removal and installatio
Page 87 and 88: Troubleshooting and failure analysi
Page 89 and 90: Analyzing belt wear and damage A br
Page 91 and 92: Troubleshooting and failure analysi
Page 93: Good practices and helpful hints Ex
Page 101 and 102: The Power of Knowledge Engineering
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SKF Timing Belt Kits - SKF.com

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