Aug 26, 2012

Assembling the engine Volvo B20B - Crankshaft

Because the crankshaft was grinded it needed new undersize bearings. 0.010" (0.254 mm).
Before I replaced the crankshaft I cleaned and then checked all the oilways; cleaning with compressed air and checking by simply injecting some oil in each oilway and see were it goes. The engine block was upside down on the engine stand when doing this.

Volvo 122S crankshaft new undersize bearings. 0.010" (0.254 mm)
Volvo 122S crankshaft new undersize bearings. 0.010" (0.254 mm)

Volvo 122S crankshaft new undersize bearing. 0.010" (0.254 mm)
Mark/undersize number on Glyco shell bearing

Volvo 122S crankshaft new undersize pilot shell bearing. 0.010" (0.254 mm)
Mark/undersize number on Glyco shell pilot bearing

Checking the oilways Volvo B20B by injecting some oil
Checking the oilways Volvo B20B by injecting some oil

Checking the oilways Volvo B20B see were the injected oil goes
Checking the oilways Volvo B20B see were the injected oil goes

Checking the oilways Volvo B20B crankshaft seatinjected oil goes to camshaft bearing
Volvo B20B crankshaft seat injected oil goes to camshaft bearing
Oilways Volvo B20B crankshaft
Oilways Volvo B20B crankshaft
Checking and filling the oilways Volvo122S  B20B crankshaft
Filling the oilways Volvo B20B crankshaft
After checking the oilways I wiped the seats clean and removed all the protective grease from the bearing shells. Then I placed the shells on the seats and put some assembly lube on them. Now I could place the grinded crankshaft on top of them.  But the pilot (no. 5) shell bearing was to big/wide for the grinded crankshaft......%$$#N$. I brought it back to the shop together with the new undersize bearings so they could grind the sides of the crankshaft. Btw: Never shave the shell bearing to make it fit!

pilot shell bearing Volvo 122s B20B
Pilot shell bearing Volvo 122s B20B doesn't fit



A couple of days later I could finally tighten the nuts with the torque wrench (122 N/m)

Next step is fitting the pistons.






No comments:

Post a Comment