Sanden SD7H15 Bedienungsanleitung
Sanden SD7H15 Type C Service Manual
Date of Issue: July 1999
Prepared by: Sanden International (Europe) Ltd.
SANDEN
SD7H15 Type C Service Manual
Prepared July 1999 – Application Engineering
2
To the reader:
Service shall be given at risk of owner, user, operator or service personnel of
the A/C system and/or the compressor for which this Service Manual is
destined.
Sanden Corporation shall neither assume responsibility nor be kept liable for
any loss or damage to the human life or body and/or the property which
occurs or has occurred in conducting or in relation to services carried out in
accordance with or in reference to this Service Manual.
SD7H15 Type C Service Manual
Prepared July 1999 – Application Engineering
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Contents
Description Page No.
1. Cautionary Information 4
2. Compressor Torque specifications 5
3. Service Operations – Clutch 6
4. Service Operations – Shaft Seal 11
5. Service Operations – Cylinder head 13
SD7H15 Type C Service Manual
Prepared July 1999 – Application Engineering
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1. Cautionary Information
1. System Pressure Release
Before disconnecting any lines, always make sure that the refrigerant has
been removed from the A/C system by recovering it with the appropriate
equipment. When working on compressors, always be sure to relieve internal
pressure first. Internal compressor pressure can be relieved by removing the
oil plug (if necessary) or by removing shipping caps/pads from both ports.
2. Recovery of Refrigerant
Never discharge refrigerant to the atmosphere. Always use approved
refrigerant recovery equipment.
3. Handling of refrigerant
Always wear eye and hand protection when working on an A/C system or
compressor.
4. Ventilation
Keep refrigerants and oils away from open flames. Refrigerant can produce
poisonous gasses in the presence of a flame. Work in a well ventilated area.
5. Avoid use of Compressed Air
Do not introduce compressed air into an A/C system due to the danger of
contamination.
SD7H15 Type C Service Manual
Prepared July 1999 – Application Engineering
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2.Compressor Specifications
2.1 SD7H15 Assembly Torques
ITEM N••m
Armature retaining nut, M8 18.0±3.0
Cylinder head bolts 34.0±5.0
Oil filler plug 20.0±5.0
Pad fitting bolt M8x1.25 34.0±4.0
Clutch lead wire clamp screw 1.30±0.3
High pressure relief valve 10.0±2.0
Armature dust cover 3.50±0.5
2.2 SD7H15 TYPE C PAG OIL
The SD7H15 Type C compressors leave the factory production line with SP10 PAG oil.
SD7H15 Type C Service Manual
Prepared July 1999 – Application Engineering
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3. Service Operations – Clutch
3.1 Armature Assembly Removal
1. If armature dust cover is present, remove the 3 bolts holding it in place
and remove cover.
2. Insert pins of armature plate spanner into holes of armature assembly.
(Threaded if armature dust cover present)
3. Hold armature assembly stationary while removing retaining nut with
14mm socket wrench.(Fig.1)
4. The armature can be removed by pulling it manually upwards off the
splined shaft.(Fig.2)
5. Remove bearing dust cover (if present). Use caution to prevent distorting
cover when removing it.
Fig.1 Removal of armature retaining nut Fig.2 Slide armature up and off shaft
SD7H15 Type C Service Manual
Prepared July 1999 – Application Engineering
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Service Operations - Clutch
3.2 Rotor Assembly Removal
1. Remove rotor retaining snap ring using snap ring pliers.(Fig.3)
2. Remove rotor using Sanden removing tool. (Fig.4)
3. The rotor bearing is not changeable as it is staked into position.(Fig.5)
Fig.3 Remove snap ring Fig.4 Remove rotor
Fig.5 Remove rotor.
Note: Bearing staked into place
SD7H15 Type C Service Manual
Prepared July 1999 – Application Engineering
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Service Operations – Clutch
3.3 Field Coil Assembly Removal
1. Remove lead wire clamp screw with Phillips screwdriver so that coil
wires are free. Take care not to round off retaining screw head. (Fig.6)
2. Remove coil retaining snap ring using snap ring pliers.(Fig.7)
3. Remove the field coil assembly.
4. Remove the shims from the shaft. Use a pointed tool and a small
screwdriver to prevent the shims from binding on the shaft.(Fig.8)
Fig.6 Remove clamp screw Fig.7 Remove snap ring
Fig.8 Remove shims
SD7H15 Type C Service Manual
Prepared July 1999 – Application Engineering
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Service Operations – Clutch
3.4 Field Coil Assembly Installation
1. Reverse the steps of Section 3. The protrusion on the underside of the coil
ring must match hole in the front housing to prevent the movement and
rotation of the coil and to correctly locate the lead wire(s).
3.5 Rotor Assembly Installation
1. Place the compressor on support stand, supported at rear end of
compressor.
2. Set rotor squarely over the front housing boss.
3. Place the rotor installer ring into the bearing bore. Ensure that the edge
rests only on the inner race of the bearing, not on the seal, pulley, or outer
race of the bearing.
4. Place the driver into the ring and drive the rotor down onto the front
housing with a hammer or arbor press. Drive the rotor against the front
housing step. A distinct change of sound can be heard when using a
hammer to install the rotor.(Fig.9)
5. Reinstall the rotor retaining snap ring using snap ring pliers.(Fig.10)
6. Reinstall rotor bearing dust cover (if present) by gently tapping it into
place.
Fig.9 Installation of rotor using arbor press Fig.10 Re-install snap ring
SD7H15 Type C Service Manual
Prepared July 1999 – Application Engineering
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Service Operations – Clutch
3.6 Armature Assembly Installation
1. Install clutch shims. Note: Clutch air gap is determined by shim
thickness. When installing a clutch on a used compressor, try the original
shims first. When installing a clutch on a compressor that has not had a
clutch installed before, first try 1.0, 0.5 and 0.1mm shims.(Fig.11)
2. Reinstall the armature on the splined shaft. Manually push the armature
down the shaft until it bottoms on the shims.
3. Replace retaining nut and torque to specification. M8- 18.0±3.0N•m
4. Check air gap with feeler gauge. Specification is 0.4-0.8mm. If air gap is
out of specification remove armature and change shims as
necessary.(Fig.13)
5. Replace armature dust cover (if used) Reapply thread lock and torque 3
bolts to 3.50±0.5N•m
Fig.11 Replace shims Fig.12 Torque armature retaining nut
Fig.13 Check air gap with feeler gauges
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