Hyundai Sonata: Balance Shaft & Oil Pump. Repair procedures - Lubrication System - Engine Mechanical SystemHyundai Sonata: Balance Shaft & Oil Pump. Repair procedures

Removal

1.
Remove the timing chain.
(Refer to Timing system in this group)
2.
Install a stopper pin (A) after compressing the balance shaft chain tensioner.
3.
Remove the balance shaft chain hydraulic tensioner (B).
4.
Remove the balance shaft chain tensioner arm (C).
5.
Remove the balance shaft chain guide (D).
6.
Remove the balance shaft & oil pump module (A) and balance shaft chain (B).

Do not disassemble the balance shaft & oil pump module.

Installation

1.
The key of crankshaft should be aligned with the mating face of main bearing cap. As a result of this, the piston of No.1 cylinder is placed at the top dead center on compression stroke.
2.
Confirm the balance shaft & oil pump module timing mark.
Timing marks to be visually aligned with centers of adjacent cast timing notches.
3.
Install the balance shaft & oil pump module (A) with the chain (B) and sprocket.
Tightening torque :
22.6 ~ 26.5 N.m (2.3 ~ 2.7 kgf.m, 16.6 ~ 19.5 lb-ft) + (103~107°)

The timing marks of balance shaft & oil pump module sprocket and crankshaft sprocket should be matched with the timing marks (color link) of balance shaft chain.

Tightening order
(1)
Tighten the bolts in order number as shown with seating torque 26.5N.m (2.7kgf.m, 19.5lb-ft) and then loosen the bolts as reverse tightening order. (4-3-2-1).
(2)
Using the SST (09221-4A000), tighten the bolts as specified tightening order in same increments as follows.

4.
Install the balance shaft chain guide (D).
Tightening torque :
9.8 ~ 11.8 N.m (1.0 ~ 1.2 kgf.m, 7.2 ~ 8.7 lb-ft)
5.
Install the balance shaft chain tensioner arm (C).
Tightening torque :
9.8 ~ 11.8 N.m (1.0 ~ 1.2 kgf.m, 7.2 ~ 8.7 lb-ft)
6.
Install the balance shaft chain hydraulic tensioner (B) then remove the stopper pin (A).
Tightening torque :
9.8 ~ 11.8 N.m (1.0 ~ 1.2 kgf.m, 7.2 ~ 8.7 lb-ft)

7.
Confirm the timing marks.
8.
Install the timing chain.
(Refer to Timing system in this group)

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