Subaru Legacy 2015 - Exhaust Cam Sprocket SST; Valve Adjustment; Cylinder Head

156
June 2014
2015 Legacy and Outback New Technology Training (Module 926)
Exhaust Cam Sprocket SST
New Special Tool 18334AA040 has been added to aid in the removal of the redesigned exhaust
cam sprockets. The new SST functions to extend the reach of existing SST 18334AA020.
ILLUSTRATION TOOL NUMBER DESCRIPTION REMARKS
18334AA020 PULLEY WRENCH
PIN SET
•Used for removing and installing cam sprocket.
•Used for rotating the intake cam sprocket LH.
•Used together with PULLEY WRENCH
(18355AA000).
•Used with the PULLEY WRENCH PIN SET
(18334AA040) when removing and installing the
exhaust cam sprocket.
ST18334AA020
18334AA040
(Newly adopted
tool)
PULLEY WRENCH
PIN SET
•Used for removing and installing exhaust cam
sprocket.
•Used together with PULLEY WRENCH
(18355AA000) and PULLEY WRENCH PIN SET
(18334AA020).
ST18334AA040
18355AA000 PULLEY WRENCH •Used for removing and installing the crank pulley.
•Used for removing and installing cam sprocket.
•Used for rotating the intake cam sprocket LH.
• Used together with PULLEY WRENCH PIN
SET (18334AA000) or PULLEY WRENCH PIN
SET (18334AA020).
•Used with the PULLEY WRENCH PIN SET
(18334AA040) when removing and installing the
exhaust cam sprocket.
ST18355AA000
ST 1
ST 2
ST 3
ST1
ST3
ST2
ST2
Cam Sprocket Tools Exhaust Cam Sprocket Removal
Valve Adjustment
The valves, valve springs, rocker arms, and rocker arm pivots have been refined to reduce
mechanical noise. The valve adjustment formulas have also changed.
A
B
2014 DIT FA 2.0 liter formula
Intake side: S = T + 1.54 x (V - 0.13 mm (0.00051 in))
Exhaust side: S= T +1.69 x (V - 0.22 mm (0.0087 in))
2015 DIT / FB 2.5 liter formula
Intake side: S = T + 1.69 x (V - 0.13 mm (0.00051 in))
Exhaust side: S = T +1.87 x (V - 0.22 mm (0.0087 in))
S: Valve shim thickness
required
V: Measured cam
clearance
T: Current valve
shim thickness
Valve Adjustment
Cylinder Head
The intake ports of the cylinder head has a new shape that produces increased air flow and tumble
to improve fuel economy and performance.
2015MY 2014MY
Cylinder Head Ports
10-5 10-6
10-7
10-8