Installation details of manual transmission 717.461 (models ML 230)
1 - Manual transmission housing; 2 - Shift actuator levers; 3 - Release bearing; 4 - Clutch release fork lever; 5 - Stop finger; 6 - Screw; 7 - Holder; 8 - Adapter body; 9 - Screw; 10 - Exhaust system support bracket; 11 - Nut; 32 - Retainer
1. Installation details of the 717.461 manual transmission on ML 230 models are shown in the illustration, to which all references in the text refer.
2. Disconnect the negative cable from the battery.
3. Remove the transfer case (see Chapter Transmission line).
4. Remove the nuts (11).
5. Loosen the bolts (9) and remove the exhaust system support bracket (10).
6. Remove the retainer (32) and disconnect the shift rod from the actuator lever (2).
7. Remove the clutch slave cylinder (see Chapter Transmission line) and, without disconnecting the hydraulic lines, move it to the side.
8. Support the transmission (1) with a trolley jack.
9. Unscrew the bolts (6) and, while simultaneously moving the jack back and down, separate the transmission (1) from the engine - if necessary, press the holder (7) upwards.
10. Check the condition of the release bearing (3), the clutch release fork lever (4) and the grooved ball bearing on the engine crankshaft.
11. Check the transmission oil level, which should reach the lower edge of the inspection/filler hole - make the appropriate adjustments if necessary.
12. Installation is carried out in the reverse order; when installing the clutch slave cylinder, make sure that the thrust pin (5) fits into the spherical receiving socket in the fork-type clutch release lever (4).
Manual transmission 717.461
Installation details of manual transmission 716.644 (mL 270 CDI models)
1 - Manual transmission housing; 2 - Mounting pins; 3 - Connecting lever; 4 - Shift rod; 5 - Shift lever; 6 - Hydraulic line; 7 - Retainer; 8 - Contact connector of the start enable switch sensor wiring; 9 - Bolts; 10 - Exhaust system support bracket; 11 - Bolts; 12 - Bolts; 13 - Bleed valve
1. Installation details of the 716.644 manual transmission on ML 270 CDI models are shown in the illustration, to which all references in the text refer.
2. Disconnect the negative cable from the battery.
3. Remove the transfer case (see Chapter Transmission line).
4. Unscrew the bolts (9 and 11) and remove the support bracket (10) of the exhaust system suspension.
5. After unlocking, remove the pins (2) and separate the connecting levers (3) from the transmission (1).
6. Remove the pin (2) and separate the shift rod (4) from the lever (5).
7. Remove the retainer (7) and disconnect the hydraulic line (6), - immediately seal the open ends of the line and the nipple connector, trying to prevent the brake fluid reservoir from emptying.
8. Support the transmission assembly (1) with a trolley jack.
9. Unscrew the bolts (12) and, while simultaneously moving the transmission back and down on the jack, separate it from the engine.
10. Check the condition of the clutch central operator and the guide bearing in the flywheel. Replace any faulty components.
11. Check the transmission oil level, which should be approximately 10 mm below the lower edge of the filler hole (the measurement can be made using an open-end wrench).
12. Installation is carried out in the reverse order - make sure that when connecting the rod (4) to the lever (5), the guide on the lever is on the side of the reverse gear lock at the base of the lever assembly (arrow).
13. Finally, bleed the clutch drive hydraulic circuit by releasing air through valve (13).