Bleed Hydraulic Lash Adjusters/HLAs?

Heads, valves, pistons, rods, crankshaft, etc...

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wtdash
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Location: N. ID

Bleed Hydraulic Lash Adjusters/HLAs?

Post by wtdash »

I'm putting a set of stock heads on an EJ22T that have been 're-surfaced' per the original owner, but don't know if the rocker assemblies were removed to do this. If they were I probably need to bleed the HLA's, correct?

Is there anyway to tell if they need bled? According to the FSM, it looks to be a PITA.


Thanks!
Turbo Subies:
'87 GL-10 Turbo - SOLD
'90 BJ EJ22T/DOHC & 5speed swap - SOLD
'04 FXT, Forged internals, VF39, STI TMIC, Cobb AP- SOLD
'93 Legacy SS - 5-speed, SOLD :-(
'02 WRX -SOLD
'96 BD-turbo'd-SOLD
'98 SF - NA-T
Legacy777
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Post by Legacy777 »

It's very easy. Just remove the rocker assembly, pull out each lifter, squeeze them. If they collapse, they need to be bled.

Use a 10mm socket or whatever works. Put it over the lifter, fill socket with oil, use a paper clip to open the bleeder port and compress & release the lifter to bleed the air out.

Then just put the lifter back in the rocker assembly and reinstall.
Josh

surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT

If you need to get a hold of me please email me rather then pm
wtdash
Fifth Gear
Posts: 2349
Joined: Fri May 04, 2007 4:09 pm
Location: N. ID

Post by wtdash »

Thanks! (again :D )
Turbo Subies:
'87 GL-10 Turbo - SOLD
'90 BJ EJ22T/DOHC & 5speed swap - SOLD
'04 FXT, Forged internals, VF39, STI TMIC, Cobb AP- SOLD
'93 Legacy SS - 5-speed, SOLD :-(
'02 WRX -SOLD
'96 BD-turbo'd-SOLD
'98 SF - NA-T
skid542
Fifth Gear
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Joined: Fri Dec 26, 2003 6:37 am
Location: North Idaho

Post by skid542 »

You can generally tell if a hla is shot by pushing on the arm of the rocker while it's still assembled. A dead one will push right in and a good one will be pretty stiff.

But if you already have them apart, then yeah, Josh's instructions are spot on. These guys are really pretty easy to take care of.
Lee

93' SS, 5mt swapped, 182k, not stock...
96' N/A OBW 5sp, 212k, Couple mods... RIP
99' N/A OBW, 4eat, mostly stock.
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