Crack Test; Hardness Test - Mercedes-Benz 603 Service Manual

Crack test

Clean crankshaft. Bearing journals should be
free of oil and grease.
Magnetize crankshaft and apply fluorescent
powder (magnaflux).
A fluorescent penetration method may also be
used (immersion in bath or using spray can).
Agent:
Paint or fluorescent powder,
cleaning agent,
developer

Hardness test

Test hardness with impact hardness tester
000 589 20 21 00 (scleroscope hardness).
The minimum hardness of 55 should be present
on 213 of journal circumference.
Hardening
Journals without hardened fillets can be
hardened inductively or flame-hardened.
Journals with hardened fillets (arrows) must
always be hardened inductively.
If this is not possible, scrap crankshaft.
03.10 - 31817
EXIT