
Copyright Meritor, Inc., 2020
MM-0861 / Revised July 2020
Page 76
Printed in USA
6
Assembly
Transfer Case Shifting Check
1. Apply 60 psi (4.14 bar) or greater of air pressure to the front axle
declutch. Figure 6.49.
2. Turn the input shaft by hand to verify the front output turns at
same rate as the rear output.
3. Remove the air pressure.
4. Apply 60 psi (4.14 bar) or greater of air pressure to the high-
range shaft air port. Figure 6.50.
Figure 6.50
MTC-4208XP & MTC-4210XP SHOWN
4000218c
AIR
CONTROL
PORT
NEUTRAL
PORT
HIGH RANGE
SHIFT PORT
LOW RANGE
SHIFT PORT
BLOW-BY
BREATHER
(IF EQUIPPED)
5. Turn the input shaft by hand to verify the rear output turns at
same rate as the input.
6. Remove the air pressure.
7. Apply 60 psi (4.14 bar) or greater of air pressure to the low-range
shaft cylinder air port. Figure 6.50.
8. Turn the input shaft by hand to verify the rear output turns at
approximately half the rate as the input.
9. Remove the air pressure.
10. For PTO-equipped cases, apply 60 psi (4.14 bar) or greater of air
pressure to the neutral shift location. Figure 6.50.
11. Turn the input shaft by hand to verify the rear output does not turn
at all. Have someone hold the output shafts to prevent them from
turning while spinning the input.
12. Remove the air pressure.
13. Remove the transfer case from the stand.
Transfer Case Assembly Test
CAUTION
THE AIR PRESSURE MUST NOT EXCEED 10 PSI (0.69 BAR).
DAMAGE TO COMPONENTS CAN RESULT.
1. Pressure test the transfer case assembly for air leakage.
2. Verify the fi ttings are installed correctly.
3. Remove the breather assembly. Figure 6.47.
Figure 6.47
MTC-4208X & MTC-4210X
REAR OUTPUT
POSITION
PTO
LOCATION
4004233a
BREATHER
REAR COVER
4. With the correct fi tting installed into the breather port, apply a
pressure of 8-10 psi (0.55-0.69 bar).
5. Shut the air supply off.
If the pressure decreases by more than 2 psi (0.14 bar) in
10 minutes:
Check for external leaks at the fi ttings.
6. Correct the leakage problem and retest.
7. Reinstall the breather assembly.
Содержание MTC-4208X Series
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