LIFTERS

Tiny
DEANHARRIS
  • MEMBER
  • 2005 MAZDA TRIBUTE
  • 2.3L
  • 2WD
  • AUTOMATIC
  • 155,237 MILES
How do you replace lifters and valve rods an seals?
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Friday, April 22nd, 2016 AT 8:15 AM

2 Replies

Tiny
HMAC300
  • EXPERT
Valve rods? If you mean followers then you should either buy a manual or rent one on site here and print instructions out as it is to much to copy ad paste on here. It is quite lengthy as you have to retime your cams after fixing seals and followers.
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Friday, April 22nd, 2016 AT 9:48 AM
Tiny
FREEMBA
  • EXPERT
2.3L Engine
I can send information on the removal of the timing chain and/or gears if necessary.

Fig. Tools necessary for camshaft and lifter removal-2.3L engine

Fig. Camshafts, lifters and related parts-2.3L engine

Fig. Camshaft cap removal sequence-2.3L engine
WARNING
During engine repair procedures, cleanliness is extremely important. Any foreign material, including any material created while cleaning gasket surfaces, that enters the oil passages, coolant passages or the oil pan can cause engine failure.
WARNING
The crankshaft, the crankshaft sprocket and the pulley are fitted together by friction, using diamond washers between the flange faces on each part. For that reason, the crankshaft sprocket is also unfastened if you loosen the pulley. Therefore, the engine must be retimed each time the damper is removed. Otherwise severe engine damage can occur.
1. With the vehicle in NEUTRAL, position it on a hoist.
NOTE
Valve tappets are select fit and the valve clearance must be checked before removing the tappets.
WARNING
Turn the engine clockwise only, and only use the crankshaft bolt.
NOTE
Before removing the camshafts, measure the clearance of each valve at base circle, with the lobe pointed away from the tappet. Failure to measure all clearances prior to removing the camshafts will necessitate repeated removal and installation and wasted labor time.
1. Use a feeler gauge to measure the clearance of each valve and record its location.
NOTE
The number on the valve tappet only reflects the digits that follow the decimal. For example, a tappet with the number 0.650 has the thickness of 3.650 mm.

Fig. Valve clearance check-2.3L engine
NOTE
A midrange clearance is the most desirable:
Intake: 0.22-0.28 mm (0.008-0.011 inch)
Exhaust: 0.27-0.33 mm (0.010-0.013 inch)
1. Select tappets using this formula: tappet thickness = measured clearance + the base tappet thickness-most desirable thickness.
2. Select the tappets and mark the installation location.
3. If any tappets do not measure within specifications, install new tappets in these locations.
4. Remove the timing chain and sprockets.
5. Mark the position of the camshaft lobes on the No. 1 cylinder for assembly reference.
WARNING
Failure to follow the camshaft loosening procedure can result in damage to the camshafts.
1. Loosen the camshaft bearing bolts in the sequence shown, one turn at a time. Repeat until all the tension is released.
2. Remove the camshaft bearing caps.
WARNING
If the camshafts and valve tappets are to be reused, mark the location of the valve tappets to make sure they are assembled in their original positions.
NOTE
The number on the valve tappets only reflects the digits that follow the decimal. For example, a tappet with the number 0.650 has the thickness of 3.650 mm.
1. Remove the camshafts.
2. Valve tappets.
3. To install, reverse the removal procedure. Coat the valve tappets with clean engine oil and insert them.
WARNING
Install the camshafts with the alignment slots in the camshafts lined up so the Camshaft Alignment Plate can be installed without rotating the camshafts. Make sure the lobes on the No. 1 cylinder are in the same position as noted in the removal procedure. Rotating the camshafts when the timing chain is removed, or installing the camshafts 180 degrees out of position can cause severe damage to the valves and pistons.
NOTE
Lubricate the camshaft journals and bearing caps with clean engine oil.

Fig. Camshaft cap torque sequence-2.3L engine
1. Install the camshafts and bearing caps. Tighten the bolts in the sequence shown in three stages.
A. Stage 1: Tighten the camshaft bearing bolt caps one turn at a time until tight.
B. Stage 2: Tighten the bolts to 7 Nm (62 inch lbs.).
C. Stage 3: Tighten the bolts to 16 Nm (12 ft. Lbs.).

Fig. Camshafts and related components-2.3L engine

Fig. Camshaft bearing cap removal sequence-2.3L engine
WARNING
During engine repair procedures, cleanliness is extremely important. Any foreign material, including any material created while cleaning gasket surfaces that enters the oil passages, coolant passages or the oil pan can cause engine failure.
WARNING
The crankshaft, the crankshaft sprocket and the pulley are fitted together by friction, using diamond washers between the flange faces on each part. For that reason, the crankshaft sprocket is also unfastened if you loosen the pulley. Therefore, the engine must be retimed each time the damper is removed. Otherwise severe engine damage can occur.
1. With the vehicle in NEUTRAL, position it on a hoist.
NOTE
Valve tappets are select fit and the valve clearance must be checked before removing the tappets.
WARNING
Turn the engine clockwise only, and only use the crankshaft bolt.
NOTE
Before removing the camshafts, measure the clearance of each valve at base circle, with the lobe pointed away from the tappet. Failure to measure all clearances prior to removing the camshafts will necessitate repeated removal and installation and wasted labor time.
2. Use a feeler gauge to measure the clearance of each valve and record its location.
NOTE
The number on the valve tappet only reflects the digits that follow the decimal. For example, a tappet with the number 0.650 has the thickness of 3.650 mm.
NOTE
A midrange clearance is the most desirable:

Fig. Valve clearance check-2.3L engine
Intake: 0.22-0.28 mm (0.008-0.011 inch)
Exhaust: 0.27-0.33 mm (0.010-0.013 inch)
3. Select tappets using this formula: tappet thickness = measured clearance + the base tappet thickness-most desirable thickness.
4. Select the tappets and mark the installation location.
5. If any tappets do not measure within specifications, install new tappets in these locations.
6. Remove the timing chain and sprockets.
7. Mark the position of the camshaft lobes on the No. 1 cylinder for assembly reference.
WARNING
Failure to follow the camshaft loosening procedure can result in damage to the camshafts.
8. Loosen the camshaft bearing bolts in the sequence shown, one turn at a time. Repeat until all the tension is released.
9. Remove the camshaft bearing caps.
WARNING
If the camshafts and valve tappets are to be reused, mark the location of the valve tappets to make sure they are assembled in their original positions.
NOTE
The number on the valve tappets only reflects the digits that follow the decimal. For example, a tappet with the number 0.650 has the thickness of 3.650 mm.
10. Remove the camshafts.
11. Remove the valve tappets.
To install:
1. Installation is the, reverse the removal procedure. Coat the valve tappets with clean engine oil and insert them.
WARNING
Install the camshafts with the alignment slots in the camshafts lined up so the Camshaft Alignment Plate can be installed without rotating the camshafts. Make sure the lobes on the No. 1 cylinder are in the same position as noted in the removal procedure. Rotating the camshafts when the timing chain is removed, or installing the camshafts 180 degrees out of position can cause severe damage to the valves and pistons.
NOTE
Lubricate the camshaft journals and bearing caps with clean engine oil.

Fig. Camshaft bearing cap torque sequence-2.3L engine
2. Install the camshafts and bearing caps. Tighten the bolts in the sequence shown in three stages.
A. Stage 1: Tighten the camshaft bearing bolt caps one turn at a time until tight.
B. Stage 2: Tighten the bolts to 7 Nm (62 inch lbs.).
C. Stage 3: Tighten the bolts to 16 Nm (12 ft. Lbs.).
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Friday, April 22nd, 2016 AT 12:24 PM

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