Disassembly, VT49 Pump: Notes
- Remove wing nut and cover from reservoir. Remove compression spring, two damping plates and filter ring. Remove woodruff key from input shaft.
- Install puller 1104-7251 on input shaft. Screw bolt back on puller enough to install clamping shoes 11004-6304 between puller and seal. Turn clamping cone of puller to the right up to stop and remove seal ring out of housing.
- On rear of housing, push in cover and insert a punch through hole in housing (See Fig 1 )
, push in on punch and remove circlip and cover. Remove spring and "O" ring from housing. Push input shaft with pressure plate at cover end, rotor, cam ring and pressure plate at input end out of housing in rearward direction.
Courtesy of MERCEDES-BENZ USA
- Remove pressure plate, cam ring and blades. Remove locking clip from input shaft, then remove rotor and pressure plate. Remove cylinder pins from housing. Using a punch, knock out locking pins in housing. (See Fig 1 ).
- Remove closing plug, volume control valve and compression spring from housing. Clamp volume control valve in vise and disassemble valve. Check spacer washer, valve cone and compression spring.