2005 SUZUKI JIMNY All

Downloaded from www.Manualslib.com manuals search engine 6A1-54 ENGINE MECHANICAL (M13 ENGINE)
Valves
Remove all carbon from valves.
Inspect each valve for wear, burn or distortion at its face and
stem end, as necessary, replace it.
Measure thickness “a” of valve head. If measured thickness
exceeds limit, replace valve.
Valve head thickness “a” (In and Ex)
Standard : 1.22 – 1.55 mm (0.048 – 0.061 in.)
Limit : 0.9 mm (0.035 in.)
Inspect valve stem end face for pitting and wear. If pitting or
wear is found there, valve stem end may be resurfaced, but
not too much to grind off its chamber. When it is worn out too
much that its chamber is gone, replace valve.
Check each valve for radial runout with a dial gauge and “V”
block. To check runout, rotate valve slowly. If runout
exceeds its limit, replace valve.
Limit on valve head radial runout
0.08 mm (0.003 in.)
Seating contact width:
Create contact pattern on each valve in the usual manner,
i.e. by giving uniform coat of marking compound to valve
seat and by rotatingly tapping seat with valve head. Valve
lapper (tool used in valve lapping) must be used.
Pattern produced on seating face of valve must be a continu-
ous ring without any break, and the width of pattern must be
within specified range.
Standard seating width “a” revealed by contact pattern on
valve face
In and Ex : 1.1 – 1.3 mm (0.0433 – 0.0512 in.)

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Valve seat repair:
A valve seat not producing a uniform contact with its valve or
showing width of seating contact that is out of specified
range must be repaired by regrinding or by cutting and
regrinding and finished by lapping.
1) EXHAUST VALVE SEAT: Use valve seat cutters (1) to make
two cuts as illustrated in figure. Two cutters must be used:
the first for making 15° angle, and the second for making 45°
angle. The second cut must be made to produce desired
seat width.
Seat width for exhaust valve seat
“a” : 1.1 – 1.3 mm (0.0433 – 0.0512 in.)
2) INTAKE VALVE SEAT: Use valve seat cutters to make three
cuts as illustrated in figure. Three cutters must be used: the
1st for making 15° angle, the 2nd for making 60° angle, and
3rd for making 45° angle. The 3rd cut (45°) must be made to
produce desired seat width.
Seat width for intake valve seat
“b” : 1.1 – 1.3 mm (0.0433 – 0.0512 in.)
3) VALVE LAPPING: Lap valve on seat in two steps, first with
coarse size lapping compound applied to face and the sec-
ond with fine-size compound, each time using valve lapper
according to usual lapping method.
Cylinder Head
Remove all carbon deposits from combustion chambers.
NOTE:
Do not use any sharp-edged tool to scrape off carbon
deposits. Be careful not to scuff or nick metal surfaces
when decarboning. The same applies to valves and valve
seats, too.

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Valve Springs
Referring to data given below, check to be sure that each
spring is in sound condition, free of any evidence of break-
age or weakening. Remember, weakened valve springs can
cause chatter, not to mention possibility of reducing power
output due to gas leakage caused by decreased seating
pressure.
Valve spring free length
Standard : 36.83 mm (1.450 in.)
Limit : 35.83 mm (1.410 in.)
Valve spring preload
Standard : 107 – 125 N (10.7 – 12.5 kg) for 31.5 mm
(23.6 – 27.6 lb / 1.240 in.)
Limit : 102 N (10.2 kg) for 31.5 mm (22.9 lb / 1.240 in.)
Spring skewness:
Use a square and surface plate to check each spring for
skewness in terms of clearance between end of valve spring
and square. Valve springs found to exhibit a larger clearance
than limit given below must be replaced.
Valve spring skewness
Limit : 1.6 mm (0.063 in.)
ASSEMBLY
1) Before installing valve guide into cylinder head, ream guide
hole with special tool (10.5 mm reamer) so as to remove
burrs and make it truly round.
Special tool
(A) : 09916-34542
(B) : 09916-37320

Downloaded from www.Manualslib.com manuals search engine 6A1-58 ENGINE MECHANICAL (M13 ENGINE)
2) Install valve guide to cylinder head.
Heat cylinder head uniformly to a temperature of 80 to
100 °C (176 to 212 °F) so that head will not be distorted, and
drive new valve guide into hole with special tools. Drive in
new valve guide until special tool (Valve guide installer) con-
tacts cylinder head.
After installing, make sure that valve guide protrudes by
specified dimension “a” from cylinder head.
Special tool
(A) : 09916-58210
(B) : 09916-56011
Specification for valve guide protrusion “a”
Intake and exhaust sides
: 11.3 mm (0.44 in.)
3) Ream valve guide bore with special tool (5.5 mm reamer).
After reaming, clean bore.
Special tool
(A) : 09916-34542
(B) : 09916-34550
4) Install valve spring seat to cylinder head.
5) Install new valve stem seal (1) to valve guide.
After applying engine oil to seal and spindle of special tool
(Valve guide installer handle), fit oil seal to spindle, and then
install seal to valve guide by pushing special tool by hand.
After installing, check to be sure that seal is properly fixed to
valve guide.
Special tool
(A) : 09917-98221
(B) : 09916-58210NOTE:
Do not reuse once-disassembled valve guide.
Make sure to install new valve guide.
Intake and exhaust valve guides are identical.
NOTE:
Do not reuse once-disassembled seal. Be sure to
install new seal.
When installing, do not tap or hit special tool with a
hammer or else. Install seal to guide only by pushing
special tool by hand. Tapping or hitting special tool
may cause damage to seal.

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6) Install valve to valve guide
Before installing valve to valve guide, apply engine oil to
stem seal, valve guide bore and valve stem.
7) Install valve spring and spring retainer.
Each valve spring has top end (large-pitch end (1)) and bot-
tom end (small-pitch end (2)). Be sure to position spring in
place with its bottom end (small-pitch end) facing the bottom
(valve spring seat side).
8) Using special tools (Valve lifter), compress valve spring and
fit two valve cotters (1) into groove in valve stem.
Special tool
(A) : 09916-14510
(B) : 09916-14521
(C) : 09916-84511
9) Install intake manifold, injectors and exhaust manifold to cyl-
inder head.
INSTALLATION
1) Clean mating surface of cylinder head and cylinder block.
Remove oil, old gasket and dust from mating surface.
2) Install knock pins (1) to cylinder block.
3) Install new cylinder head gasket (2) to cylinder block.“TOP”
mark provided on gasket comes to crankshaft pulley side,
facing up (toward cylinder head side).
A : Valve spring retainer side
B : Valve spring seat side
NOTE:
When compressing the valve spring, do not damage
inside face of tappet installing hole.

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4) Make sure that oil jet (venturi plug) (1) is installed and if it is,
that it is not clogged.
When installing it, be sure to tighten to specified torque.
Tightening torque
Venturi plug (a) : 5 N·m (0.5 kg-m, 3.5 lb-ft)
5) Install cylinder head to cylinder block.
Apply engine oil to cylinder head bolts and tighten them
gradually as follows.
Cylinder head bolt diameter measurement points
“a” : 83.5 mm (2.81 in.)
“b” : 115 mm (4.53 in.)
Cylinder head bolt diameter difference (deformation)
Limit (“A” – “B”) : 0.1 mm (0.004 in.)
a) Tighten cylinder head bolts (“1” – “10”) to 20 N·m (2.0 kg-m,
14.5 lb-ft) according to numerical order as shown by using
a 12 corner socket wrenches.
b) In the same manner as in Step a), tighten them to 40 N·m
(4.0 kg-m, 29.0 lb-ft).
c) Retighten all bolts 60° according to numerical order in fig-
ure.
d) Repeat Step c).
e) Tighten bolt “A” to specified torque.
Tightening torque
Cylinder head bolt for M8 (a) : 22 N·m (2.2 kg-m, 16.0 lb-ft)
Cylinder head bolts for M10
(b) : 40 N·m (4.0 kg-m, 29.0 lb-ft) and extra tightening 60°
twice
NOTE:
If cylinder head bolts are reused, check thread diameters
of them for deformation according to the following and
replace them with new ones if thread diameter difference
exceeds limit.
Measure each thread diameter of cylinder head bolt (1) at
“A” on 83.5 mm (2.81 in.) from seat side of flange bolt
and “B” on 115 mm (4.53 in.) from seat side of flange bolt
by using a micrometer (2).
Then calculate difference in diameters (“A” – “B”).
If it exceeds limit, replace with new one.

“A”
“a”
“b”“B”

1
12
NOTE:
Be sure to tighten M8 bolt (“A”) after securing the other
bolt.

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6) Install exhaust manifold stiffener and exhaust pipe referring
to “Exhaust Manifold” in this section.
7) Install camshafts, timing chain and chain cover referring to
“Camshaft, Tappet and Shim”, “Timing Chain and Chain
Tensioner” and “Timing Chain Cover” in this section.
8) Install cylinder head cover and oil pan referring to “Cylinder
Head Cover” and “Oil Pan and Oil Pump Strainer” in this sec-
tion.
9) Install intake manifold stiffener and connect each hoses and
electric lead wires securely.
10) Install air cleaner outlet hoses.
11) Install radiator with cooling fan and connect A/T fluid hoses
(vehicle with A/T), radiator inlet and outlet hoses referring to
“Water Pump Belt and Cooling Fan” and “Radiator” in Sec-
tion 6B.
12) Adjust generator belt tension referring to “Water Pump Belt
Tension” in Section 6B.
13) Adjust A/C compressor and/or P/S pump belt tension (if
equipped) referring to “Compressor Drive Belt” in Section 1B
or “Power Steering Belt” in Section 3B1.
14) Adjust accelerator cable play referring to “Accelerator Cable
Adjustment” in Section 6E.
15) Check to ensure that all removed parts are back in place.
Reinstall any necessary parts which have not been rein-
stalled.
16) Refill cooling system with coolant, engine with engine oil and
A/T with specified A/T fluid (vehicle with A/T).
17) Connect negative cable at battery.
18) Verify that there is no fuel leakage, coolant leakage, oil leak-
age, A/T fluid leakage (vehicle with A/T) and exhaust gas
leakage at each connection.

Downloaded from www.Manualslib.com manuals search engine 6A1-62 ENGINE MECHANICAL (M13 ENGINE)
Pistons, Piston Rings, Connecting Rods and Cylinders
REMOVAL
1) Relieve fuel pressure referring to “Fuel Pressure Relief Pro-
cedure” in Section 6.
2) Disconnect negative cable at battery.
3) Drain engine oil.
4) Drain coolant.
5) Remove cylinder head referring to “Valves and Cylinder
Head” in this section.
6) Mark cylinder number on all pistons, connecting rods and
connecting rod caps using silver pencil or quick drying paint.
7) Remove rod bearing caps.
1. Top ring8. Piston pin
2. 2nd ring9. Piston pin circlip
3. Oil ring10. Bearing cap nut
1) Tighten all nuts to 15 N·m (1.5 kg-m)
2) Turn all nuts to 45°
3) Then, turn all nuts to 45° once again
4. PistonTightening torque
5. Connecting rod
: Apply engine oil to sliding surface except inner surface of big end, and rod bolts.
Make sure rod bolt diameter when reuse it due to plastic deformation tightening.
Refer to “Inspection” of “Connecting Rod”.Apply engine oil to sliding surface of each
parts.
6. Connecting rod bearing cap
: Point arrow mark on cap to crankshaft pulley side.Do not reuse.
7. Connecting rod bearing