VbeltOutlet B47MXL Timing Belt Instruction Manual

B47MXL Timing Belt

Product Information: Timing Belt Assembly

The Timing Belt Assembly is a mechanical component used in the
product. It consists of a timing belt, belt idler, automatic belt
tension adjuster assembly, and timing belt guide. The timing belt
is responsible for synchronizing the rotation of the crankshaft and
camshaft, ensuring proper engine operation.

Timing Belt Assembly Specifications:

• Belt Idler No. 1: Z1 – 46.8 tooth length, Z2 – 43.7 tooth
  length

• Belt Idler No. 2: Specify data not provided

Automatic Belt Tension Adjuster Assembly Specifications:

• Tightening Torque: Specify data not provided

Product Usage Instructions

Installation:

Automatic Belt Tension Adjuster Assembly and Belt Idler:

1. Attach the automatic belt tension adjuster assembly to the
   vertical pressing tool.

2. Slowly move the adjuster rod down with a pressure of 294 N (30
   kgf, 66 lb) until the adjuster rod is aligned with the stopper pin
   hole in the cylinder.

3. With a 2 mm (0.08 in) diameter stopper pin or a 2 mm (0.08 in)
   (nominal) diameter hex bar wrench, insert it into the stopper pin
   hole in the cylinder to secure the adjuster rod.

4. Install belt idler No. 1.

5. Install automatic belt tension adjuster assembly and tighten
   the bolts to specified torque.

Timing Belt:

1. Turn camshaft sprocket No. 2 and camshaft sprocket No. 1 using
   the specified tools to align their marks (A) to the top
   positions.

2. Align the alignment mark (B) on the timing belt with the marks
   on the sprockets (A) and position the timing belt properly,
   ensuring the correct rotating direction.

3. Temporarily tighten bolts.

4. Install belt idler No. 2 and tighten the bolts.

5. Check and adjust the clearance between the timing belt and
   timing belt guide using a thickness gauge.

6. Ensure that the marks on the timing belt and camshaft sprockets
   are aligned, then remove the stopper pin from the belt tensioner
   adjuster.

7. Tighten the bolts.

8. Install timing belt guide (for MT vehicles only).

9. Install belt cover, crankshaft pulley, and V-belt.

Inspection:

Timing Belt:

• Visually check the extension of the rod beyond the body. If it
  is not within specifications, replace it with a new one.

Automatic Belt Tension Adjuster:

• Visually check oil seals for leaks and rod ends for abnormal
  wear or scratches. Replace faulty parts if necessary.

• Check that the adjuster rod does not move when a pressure of
  294 N (30 kgf, 66 lb) is applied to it to ensure stiffness.

• If the adjuster rod is not stiff and moves freely, follow the
  specified procedures to check and replace it if needed.

TIMING BELT ASSEMBLY

MECHANICAL

(2) Using white paint, put alignment and/or arrow marks on timing belts in relation to the crank sprocket and cam sprockets.

2. BELT IDLER AND AUTOMATIC BELT TENSION ADJUSTER ASSEMBLY

1. Remove belt idler (No. 1).

Specified data: Z1: 46.8 tooth length Z2: 43.7 tooth

ME-00233

Z1

Z2

ME-00237
2) Remove automatic belt tension adjuster assembly.

6. Remove belt idler (No. 2). 7) Remove belt idler No. 2.
7. Remove timing belt.

ME-00234 ME-00235 ME-00236

ME-00238
B: INSTALLATION
1. AUTOMATIC BELT TENSION ADJUSTER ASSEMBLY AND BELT IDLER

1. Preparation for installation of automatic belt tension adjuster assembly;
   CAUTION: · Always use a vertical type pressing tool to move the adjuster rod down. · Do not use a lateral type vise. · Push adjuster rod vertically. · Be sure to slowly move the adjuster rod down applying a pressure of 294 N (30 kgf, 66 lb). · Press-in the push adjuster rod gradually taking more than three minutes. · Do not allow press pressure to exceed 9,807 N (1,000 kgf, 2,205 lb). · Press the adjuster rod as far as the end surface of the cylinder. Do not press the adjuster rod into the cylinder. Doing so may damage the cylinder. · Do not release press pressure until stopper pin is completely inserted.
   (1) Attach the automatic belt tension adjuster assembly to the vertical pressing tool.

ME(H4SO)-47

MECHANICAL

TIMING BELT ASSEMBLY

(2) Slowly move the adjuster rod down with a pressure of 294 N (30 kgf, 66 lb) until the adjuster rod is aligned with the stopper pin hole in the cylinder.

3. Install belt idler (No. 1).
   Tightening torque: 39 N·m (4.0 kgf-m, 28.9 ft-lb)

ME-00239
(3) With a 2 mm (0.08 in) dia. stopper pin or a 2 mm (0.08 in) (nominal) dia. hex bar wrench inserted into the stopper pin hole in the cylinder, secure the adjuster rod.
ME-00437
2) Install automatic belt tension adjuster assembly. Tightening torque:
39 N·m (4.0 kgf-m, 28.9 ft-lb)

ME-00237
2. TIMING BELT

1. Preparation for installation of automatic belt tension adjuster assembly. <Ref. to ME(H4SO)-47, AUTOMATIC BELT TENSION ADJUSTER ASSEMBLY AND BELT IDLER, INSTALLATION, Timing Belt Assembly.> 2) Installation of timing belt
   (1) Turn camshaft sprocket No. 2 using ST1, and turn camshaft sprocket No. 1 using ST2 so that their alignment marks (A) come to top positions. ST1 18231AA010 CAMSHAFT SPROCKET
   WRENCH
   NOTE: CAMSHAFT SPROCKET WRENCH (499207100) is also can be used.
   ( A )

ME-00241

ME-00243

ME(H4SO)-48

TIMING BELT ASSEMBLY

(2) While aligning alignment mark (B) on timing belt with marks on sprockets (A), position timing belt properly. NOTE: Ensure belt’s rotating direction is correct.
( B )

(1) Temporarily tighten bolts.

MECHANICAL

( A )

( A )
3) Install belt idler No. 2.
Tightening torque: 39 N·m (4.0 kgf-m, 28.9 ft-lb)
4) Install belt idler (No. 2).
Tightening torque: 39 N·m (4.0 kgf-m, 28.9 ft-lb)

ME-00244

ME-00230
(2) Check and adjust clearance between timing belt and timing belt guide by using thickness gauge.
Clearance: 1.0±0.5 mm (0.039±0.020 in)

ME-00235
5) After ensuring that the marks on timing belt and camshaft sprockets are aligned, remove stopper pin from belt tensioner adjuster.

(3) Tighten bolts.
Tightening torque: 9.8 N·m (1.0 kgf-m, 7.2 ft-lb)

ME-00246

ME-00245
6) Install timing belt guide. (MT vehicles only)

ME-00247
7) Install belt cover. <Ref. to ME(H4SO)-45, INSTALLATION, Belt Cover.> 8) Install crankshaft pulley. <Ref. to ME(H4SO)-44, INSTALLATION, Crankshaft Pulley.> 9) Install V-belt. <Ref. to ME(H4SO)-42, INSTALLATION, V-belt.>

ME(H4SO)-49

MECHANICAL

TIMING BELT ASSEMBLY

C: INSPECTION
1. TIMING BELT

1. Check timing belt teeth for breaks, cracks, and wear. If any fault is found, replace belt. 2) Check the condition of back side of belt; if any crack is found, replace belt. CAUTION: · Be careful not to let oil, grease or coolant contact the belt. Remove quickly and thoroughly if this happens. · Do not bend the belt sharply. Bending radius: h
   60 mm (2.36 in) or more
   h

(3) If the adjuster rod is not stiff and moves down, replace the automatic belt tension adjuster assembly with a new one.
CAUTION: · Always use a vertical type pressing tool to move the adjuster rod down. · Do not use a lateral type vise. · Push adjuster rod vertically. · Press-in the push adjuster rod gradually taking more than three minutes. · Do not allow press pressure to exceed 9,807 N (1,000 kgf, 2,205 lb). · Press the adjuster rod as far as the end surface of the cylinder. Do not press the adjuster rod into the cylinder. Doing so may damage the cylinder.
4) Measure the extension of rod beyond the body. If it is not within specifications, replace with a new one.
Rod extension: H 5.7±0.5 mm (0.224±0.020 in)

ME-00248
2. AUTOMATIC BELT TENSION ADJUSTER

1. Visually check oil seals for leaks, and rod ends for abnormal wear or scratches. If necessary, replace faulty parts. 2) Check that the adjuster rod does not move when a pressure of 294 N (30 kgf, 66 lb) is applied to it. This is to check adjuster rod stiffness. 3) If the adjuster rod is not stiff and moves freely when applying 294 N (30 kgf, 66 lb), check it using the following procedures:
   (1) Slowly press the adjuster rod down to the end surface of the cylinder. Repeat this motion 2 or 3 times. (2) With the adjuster rod moved all the way up, apply a pressure of 294 N (30 kgf, 66 lb) to it. Check adjuster rod stiffness.

H
ME-00249
3. BELT TENSION PULLEY

1. Check mating surfaces of timing belt and contact point of adjuster rod for abnormal wear or scratches. Replace automatic belt tension adjuster assembly if faulty. 2) Check tension pulley for smooth rotation. Replace if noise or excessive play is noted. 3) Check tension pulley for grease leakage.
   4. BELT IDLER
2. Check belt idler for smooth rotation. Replace if noise or excessive play is noted. 2) Check belt outer contacting surfaces of idler pulley for abnormal wear and scratches. 3) Check belt idler for grease leakage.

ME(H4SO)-50
Copyright 2012 – 2014 Service Repair Solutions, Inc.

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