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3. INTRODUCTION
The VS400 vacuum gun is capable of maintaining depressions of up to 25in(64cm)Hg and has a displacement of 1in
Accessories are supplied to allow single handed brake and clutch bleeding, the testing of vacuum actuated switches and modulators and many
other applications.
4. APPLICATIONS
F
WARNING! Before u s e , e nsure you read, u n d e r s t a n d and apply safety
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instructions in Section 1.
Note: These instructions are of a general nature only. Always follow the specific
i n s t r u c t i o n s i n the vehicle manufacturer ’s, or a proprietary, manual.
4.1.
Vacuum gun
4.1.1. When using gun with outlet port ( fig.1.2) unconnected, protect it with vented cap (fig.1.B)
to prevent ingress of dirt.
4.1.2. At any time during use of the gun the vacuum generated may be released by pulling
trigger (fig.1.3).
4.2.
Bleeding
F
WARNING! Familiarise yourself with the hazards of brake fluid - read manufacturer’s
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instructions on container.
4.2.1. Fit appropriately sized adaptor (G) to the bleed nipple of the wheel brake (or clutch
actuating) cylinder.
4.2.2. Connect the adaptor to the vacuum port (fig.1.1) of the gun using tubing provided.
4.2.3. Connect outlet port (fig.1.2) of the gun to top of fluid container (port marked ‘Pump’)
with second length of tubing provided.
4.2.4. Ensure master cylinder reservoir level is above minimum and then unscrew bleed nipple
approx. 1/4 turn.
4.2.5. Operate vacuum gun to draw brake fluid through system and into fluid container.
DO NOT allow level in reservoir to fall below minimum. Check frequently and
refill as necessary with new fluid.
4.2.6. Continue until fluid entering container is clean and bubble-free. Retighten bleed nipple
and then remove adaptor.
4.2.7. After bleeding brakes always check that brake pedal feels firm and that brakes operate
normally, before going onto public roads.
4.3.
General applications
Because the gun creates a partial vacuum it can be use to:
a) test the operation and calibration of any item which responds to a vacuum during normal operation e.g. ignition vacuum advance/retard mechanism.
b) check systems (fuel, air con., heating, brake servo etc.) for leakage.
c) test 2-stroke engines for crankcase seal leaks.
d) test pressure switches etc. if the vacuum pump can be connected to the ‘atmospheric’ side of the component.
NOTE:
It is our policy to continually improve products and as such we reserve the right to alter data, specifications and component parts without prior notice.
IMPORTANT: No liability is accepted for incorrect use of this product.
WARRANTY: Guarantee is 12 months from purchase date, proof of which will be required for any claim.
INFORMATION: For a copy of our catalogue and promotions call 01284 757525 and leave your full name and address, including postcode.
01284 757500
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Sole UK Distributor,
Sealey Group, Bury St. Edmunds, Suffolk.
01284 703534
(16ml) per stroke.
3
fig. 1
E-mail: sales@sealey.co.uk
VS400 - 0021 - (!) - 181000
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