Primary Pulley and Secondary Pulley
Primary Pulley and Secondary PulleyREMOVAL
NOTE:
Always replace primary pulley and secondary pulley as an assembly because they are non-disassembled parts.
1) Remove the transmission assembly from the vehicle.
2) Remove the air breather hose.
3) Remove the oil pan and control valve body.
4) Remove the transmission harness.
5) Remove the extension case.
6) Remove the rear drive shaft.
7) Remove the transfer clutch assembly.
8) Remove the transfer reduction driven gear assembly.
9) Remove the intermediate case.
10) Remove the forward clutch assembly.
11) Remove the transmission case.
12) Set the ST to the secondary pulley, and expand the V groove of pulley until the variator chain gets completely loose.
ST 18769AA000 EXPANDER PULLEY
13) Remove the chain guide from lubrication pipe and support rod.
14) Remove the lubrication pipe and support rod.
15) Detach the six claws to remove the two chain guide.
16) Remove the secondary pulley mounting bolt.
17) Remove the secondary pulley from drive pinion retainer and intersect the V groove of secondary pulley and V groove of primary pulley. Remove the variator chain from secondary pulley and remove the secondary pulley.
CAUTION:
Cover the V grooves of secondary pulley and primary pulley with cloth to protect the both pulleys and variator chain from scratching.
18) Remove the variator chain from primary pulley.
19) Remove the primary pulley mounting bolt.
20) Remove the primary pulley.
21) Remove the two seal rings from drive pinion retainer.
22) Remove the two seal rings from primary pulley.
INSTALLATION
1) Select shims for pulley alignment.
2) Install the two seal rings to drive pinion retainer.
NOTE:
^ Use a new seal ring.
^ Apply CVTF to the seal rings.
^ When installing the seal ring, do not expand the seal ring too much.
3) Install the selected shims to the primary pulley bearing catch surface.
4) Install the two seal rings to primary pulley.
NOTE:
^ Use a new seal ring.
^ Apply CVTF to the seal rings.
5) Install the primary pulley and adjust the position of bolt holes of primary bearing retainer and converter case to tighten the primary pulley bolt.
NOTE:
Use a new seal washer.
Tightening torque:
21 Nm (2.1 kgf-m, 15.5 ft-lb)
6) Set the ST to secondary pulley and expand the V groove of pulley.
ST1 18769AA000 EXPANDER PULLEY
7) Place the variator chain on the primary pulley groove and attach the secondary pulley and variator chain together to the drive pinion retainer.
CAUTION:
Cover the V grooves of primary pulley and secondary pulley with cloth to protect the both pulleys and variator chain from scratching.
(1) Place the variator chain on primary pulley.
(2) Intersect the V groove of primary pulley and the V groove of secondary pulley and install the secondary pulley while placing the variator chain on secondary pulley.
(3) While aligning the bolt hole of secondary bearing retainer and the bolt hole of driving pinion retainer, install the secondary pulley to drive pinion retainer.
8) Install the secondary pulley bolt.
Tightening torque:
33 Nm (3.4 kgf-m, 24.3 ft-lb)
9) Install the chain guide.
NOTE:
Install it with two claws facing outward and with four claws facing inward.
10) Engage the cutout portions of support rod and drive pinion retainer and install the support rod.
11) Engage the cutout portions of lubrication pipe and drive pinion retainer and install the lubrication pipe.
12) Install the chain guide so that the lubrication pipe and support rod run through between the protrusions of each chain guide. Then remove the ST (PULLEY EXPANDER).
13) Install the O-ring to the lubrication pipe.
NOTE:
Use new O-rings.
14) Install the lubrication pipe.
15) Install the transmission case.
16) Install the forward clutch assembly.
17) Install the intermediate case.
18) Install the transfer reduction driven gear assembly.
19) Install the transfer clutch assembly.
20) Install the rear drive shaft.
21) Install the extension case.
22) Install the transmission harness.
23) Install the control valve body and oil pan.
24) Install the air breather hose.
25) Install the transmission assembly to the vehicle.
INSPECTION
^ Check the surface of primary and secondary pulley cones for damage or wear.
^ Check the primary and secondary pulley for damage.
^ Check the bearing for seizure or wear.
^ Apply CVTF to bearing and rotate the bearing to check for noise or dragging etc.
ADJUSTMENT
PROCEDURE IN REPLACEMENT OF PRIMARY AND SECONDARY PULLEY, OR IN REPLACEMENT OF PRIMARY PULLEY, SECONDARY PULLEY AND VARIATOR CHAIN
1) Measure depth "Lp" from the ST upper face to the primary pulley bearing catch surface at several points and calculate the average.
ST 499575400 GAUGE
2) Measure height "Ls" from the drive pinion retainer upper face to the secondary pulley bearing catch surface at several points and calculate the average.
ST 499575400 GAUGE
3) Calculate the following formula.
Calculation formula:
T (mm) = B + (Lp - Ls) + 31.601 - A
[T (in) = B + (Lp - Ls) + 1.224 - A]
T: Pulley alignment
A: Specified primary pulley dimension
B: Specified secondary pulley dimension
Lp: Depth from the ST upper face to the primary pulley bearing catch surface
Ls: Depth from the ST upper face to the secondary pulley bearing catch surface
31.601 mm (1.224 in): Constant
4) Select one to two shims so that the total thickness meets the value obtained from step 3).
PROCEDURE WHEN REPLACING ONLY DRIVE PINION RETAINER OR CONVERTER CASE
1) Clean the mating surface of current drive pinion retainer and converter case.
2) Measure and record the shim thickness that is attached on the current converter case.
3) Using the current drive pinion retainer, measure depth "Lp1" from the ST upper face to the primary pulley bearing catch surface at several points and calculate the average.
ST 499575400 GAUGE
4) Using the current drive pinion retainer or current converter case, measure depth "Ls1" from the ST upper face to the secondary pulley bearing catch surface at several points and calculate the average.
ST 499575400 GAUGE
5) Calculate the "LD1" using the following formula and record it.
Calculation formula:
LD1 mm (in) = Lp1 - Ls1
LD1: Height from the primary pulley bearing catch surface to the secondary pulley bearing catch surface
Lp1: Depth from the ST upper face to the primary pulley bearing catch surface
Ls1: Depth from the ST upper face to the secondary pulley bearing catch surface
6) Using the new drive pinion retainer or new converter case, measure depth "Lp2" from the ST upper face to the primary pulley bearing catch surface at several points and calculate the average.
ST 499575400 GAUGE
7) Using the new drive pinion retainer or new converter case, measure depth "Ls2" from the ST upper face to the secondary pulley bearing catch surface at several points and calculate the average.
ST 499575400 GAUGE
8) Calculate the "LD2" using the following formula and record it.
Calculation formula:
LD2 mm (in) = Lp2 - Ls2
LD2: Height from the primary pulley bearing catch surface to the secondary pulley bearing catch surface
Lp2: Depth from the ST upper face to the primary pulley bearing catch surface
Ls2: Depth from the ST upper face to the secondary pulley bearing catch surface
9) Calculate the recorded values of "LD1" and "LD2" to obtain the positive number to select the shims.
Calculation formula: T1 mm (in) = LD1 - LD2 or T2 mm (in) = LD2 - LD1
T1, T2: Difference between new drive pinion retainer or new converter case and current drive pinion retainer or current converter case
LD1: Calculated value of current drive pinion retainer or current converter case
LD2: Calculated value of new drive pinion retainer or new converter case
