Volkswagen Fox (2004 year). Manual — part 13
Special tools and workshop
equipment required
♦ U/J extension and socket,
10 mm -3220-
♦ Torque wrench - 5 to 50 Nm
(enc. 1/2") -VAG 1331-
♦ Adapter -V.A.G 1381/12-
♦ Compression meter -
V.A.G 1763-
Test conditions
• Minimum engine oil temperature 30 °C.
Test sequence
– Remove central connector from unit injectors.
– Remove all glow plugs, using U/J extension and socket, 10
mm -3220- .
Fox 2004 ➤
1. Cylinder head - remove and install
49
Note
How to use the compression meter ⇒ Instruction Manual .
– Operate the starter motor until the meter does not indicate fur‐
ther increase in pressure.
Compression pressure:
New: 25...31 bar. Wear limit: 19 bar.
Permissible difference between all cylinders: 5 bar.
– Install glow plugs with U/J extension and socket, 10 mm
-3220- . Tightening torque: 15 Nm.
– Check fault memory, eliminate possible present failures and,
then, erase fault memory
⇒ page 115
.
Note
Removing the central connector from unit injectors causes faults
to be recorded. Therefore, check the fault memory and erase it,
when required.
Fox 2004 ➤
50
Note
♦
Cylinder heads with cracks between the valve seats can still
be used without reducing their useful life when such cracks
are small, maximum 0.5 mm wide.
♦
All bearing and running surfaces must be lubricated before in‐
stalling.
WARNING
Always replace self-locking nuts and screws subject to angular
torque
1 - 20 Nm + 90°
❑ Replace after each re‐
moval.
❑ Loosen and tighten in
the proper order
⇒ page 58
2 - Injector drive arm shaft
3 - Cylinder head securing bolt
❑ Replace.
❑ Loosen and tighten in
the proper order
⇒ page 46
❑ Before installing, set
washers in cylinder
head.
4 - Washer
❑ For head screws.
5 - Tappet
❑ Do not interchange.
❑ With hydraulic offsetting
of valve gap.
❑ Store with cam lobe
contact surface down‐
wards.
❑ Check camshaft axial
clearance before instal‐
ling
⇒ page 52
❑ Lubricate contact sur‐
face.
❑ Before removing, re‐
move the camshaft
bearing caps.
6 - Keys
7 - Valve spring upper plate
8 - Valve spring
❑ Removing and installing: Cylinder head removed: with Compressor device -2037- mounted
⇒ page 56
.
Fox 2004 ➤
2. Valve command - repair
51
⇒ page 56
.
❑ Install in the cylinder head before putting the bearing caps.
10 - Valve stem seal
❑ Replace
⇒ page 56
.
11 - Valve guide
❑ Check
⇒ page 55
.
12 - Injection unit
❑ Remove and install
⇒ page 112
.
13 - Cylinder head
❑ See note
⇒ page 51
.
❑ Rework valve seats
⇒ page 53
14 - Oil seal
❑ Do not apply additional lubricant or grease to the seal lip.
❑ Before installation, remove oil residues from crankshaft trunnion with clean cloth.
❑ For installation, cover the groove in the camshaft tapered section with adhesive tape.
❑ Remove and install.
15 - Valves
❑ Valve dimensions
⇒ page 53
16 - Bearing shell
❑ Do not interchange used bearing shells (mark)
❑ Ensure proper seating of retaining clips in bearing caps and cylinder head.
17 - Camshaft
❑ Check axial clearance
⇒ page 52
❑ Remove and install
⇒ page 58
.
❑ Check radial clearance with Plastigage. Wear limit: 0.11 mm.
❑ Excentricity: max. 0.01 mm.
❑ Valve identification and synchronization
⇒ page 53
18 - Bearing cap
❑ Installation sequence
⇒ page 58
.
❑ Bearing cap 4 is identified as bearing cap 5.
❑ When installing, use Sealant -AMV 17400401- to seal surfaces of bearing caps 1 and 4, which contact
cylinder head
19 - 8 Nm + 90°
❑ Replace after each removal .
Check camshaft axial clearance
Fox 2004 ➤
52
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст