7.5.2 Removing diaphragms from MVP 070-3
NOTICE
Damage to diaphragms due to incorrect handling
Incorrect handling or using the wrong tools when changing diaphragms can cause damage to dia-
phragms of the vacuum pump.
► Do not use pointed or sharp-edged tools.
► Do not excessively bend diaphragms.
Prerequisite
● Head cover and valves dismantled
Required tool
● Diaphragm key
WAF 66
Required consumables
● Alcohol or cleaning solvent, if necessary
Fig. 11:
Function of diaphragm key
Procedure
1. Carefully bend up side of diaphragm.
2. Attach diaphragm key to diaphragm support disk.
3. Unscrew diaphragm clamping disk, diaphragm pair and diaphragm support disk.
4. Apply alcohol or cleaning solvent to release diaphragm pair from supporting washer if it has be-
come stuck.
5. Remove diaphragm pair and diaphragm support disk from square of diaphragm clamping disk.
6. Pay attention to spacer disks under diaphragm support disk.
– Use original spacer disks for each installation location when mounting.
7. Inspect diaphragm pair for damage.
7.5.3 Installing diaphragms for MVP 070-3
Required tools
● Diaphragm key
WAF 66
● Calibrated torque wrench (tightening factor ≤ 1.6) for hexagonal, size 6
Spare parts required
● Overhaul kit
Required consumables
● Clean, dry cloth
Procedure
1. Clean all parts with a dry, clean cloth.
2. Replace wear parts (diaphragms) according to spare part package.
Maintenance
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