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VacuumMate Allweather
The complete Intake Vacuum Synchroniser with Dynamic Engine Check & RPM
Read the whole of this manual before starting to use the VacuumMate
1. OVERVIEW
VacuumMate's 3-in-1 functions are all essential for rapid, precise and reliable intake synchronising.
Use the RPM mode for the essential adjustment of the engine speed to the correct value as stipulated
by the constructor, prior to and after synchronising. (No need for a separate tachometer instrument or
the need to rely on vehicle tachometers, usually imprecise at low-end engine speeds).
Then accurately synchronise in the "AVE" mode to the constructor-specified value(s). If synchronising
seems difficult to achieve, flick the selector switch over to the "DYN" mode for an immediate visual
check that the cylinder seals and valves are functioning correctly. A valve leak or other sealing defect
affecting the manifold pressure will thwart any attempt at a correct synchronisation of the relevant
cylinder's intake.
More details of these three functions are given in the following sections of this manual.
The purpose of "synchronising" throttle valves is to bring the average vacuum settings in the various
intake channels as close to their specified values as possible. Their specified values are (usually)
equal but for some engines one or more cylinders may need a slightly different value from the others
for specific reasons such as differential heat expansion in control linkages of differing lengths. It is
therefore essential to consult the service manual. Precise adjustments are essential to ensure a
stable engine idle speed and a good engine response.
VacuumMate has four highly visible LED bar-graph displays for monitoring up to 4 channels (or 4
cylinders). These fast, precise & frictionless columnar displays replace outdated toxic mercury columns.
VacuumMate's compact size & weight allows use anywhere, whether in the workshop or at the track –
the ideal tool for the professional mechanic, for power sports vehicles, 4-stroke outboard motors and
multi-carburettor classic sports cars. The bright protective holder and custom storage and travel case
lend added protection to the robust water- and shock-resistant construction.
The VacuumMate VMR6ME model has an internal rechargeable 7,2V NiMH battery, ideal for outdoor
use, for example on outboard motors on board boats. The battery can be recharged simply by
connecting to an external charged 12V vehicle or storage battery.
In addition to it's protective holder and custom travel case, the VacuumMate kit includes the external
battery cord-set, a fuel-line Tee-connector and 2 sets (of 4) unique "flexi-rigid" connection adapters
with M5 & M6 threads for easy connections to all types of engines. Additional connection adapters are
readily available to order, (order references M5ADPFR & M6ADPFR respectively).
Legend : 1) External battery connection cord-set. 2) Flexible (replaceable) santoprene hoses. 3) 2 sets
flexi-rigid adapters.
4) 4 LED-array displays. 5) 3 graduated "AVE" mode scales. 6) RPM scale.
7) Low battery warning LED. 8) Function switch RPM / VAC. 9) Scale range switch, AVE mode.
10) Function switch AVE / DYN. 11) RPM selector switch for 2-stroke/4-stroke engines. 12) Storage
case. 13) Switch for selection of internal battery & to reset to "ON" (model with internal battery only).
14) Optional StandMate custom mobile stand for VacuumMate, IgnitionMate.
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Summary of Contents for TecMate VacuumMate Allweather
- Page 1 VacuumMate Allweather The complete Intake Vacuum Synchroniser with Dynamic Engine Check & RPM Read the whole of this manual before starting to use the VacuumMate 1. OVERVIEW VacuumMate’s 3-in-1 functions are all essential for rapid, precise and reliable intake synchronising.
- Page 2 2. UNITS OF MEASUREMENT OF VACUUM & THEIR EQUIVALENTS.. For our purposes, vacuum is negative pressure, or pressure which is below atmospheric pressure at sea level which is equal to the pressure exerted by a column of mercury (Symbol: Hg) with a height of about 76 cm.
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Page 3: Battery Selection
Use the DYN mode to check for and analyse defective engine seals in case of apparent difficulty in arriving at a satisfactory synchronisation, even after several attempts and probably associated with an irregular engine rhythm. The function of the DYN mode is to compare the waveform heights of each connected channel (cylinder) and the relative positions of their crests &... -
Page 4: Pneumatic Connections
A well charged external 12V battery or power supply can be left connected to the model VMR6ME when not in use to ensure that the internal batteries are always charged up. To connect the external battery, (for VMR6ME, first place the battery selection switch in the 12V battery position), connect the red alligator clip to the positive terminal and then the black clip to the negative terminal of a charged 12V battery. -
Page 5: How To Proceed
rubber hose (respective order references VMLFIXADP5 & VMLFIXADP6) or in short configuration without hose, (order reference VMSFIXADP5 or VMSFIXADP6). When the fuel is supplied through an automatic fuel valve, it is usually connected to one of the vacuum ports. By using the Tee-piece (illustrated above) & it’s short piece of hose, included with the VacuumMate, the fuel valve can remain connected, so that fuel can flow while synchronising. - Page 6 Adjust the engine speed Select AVE mode with the AVE/DYN selector switch. Put the RPM/VAC switch in the RPM position. RPM selection is indicated by the LED below the RPM scale markings. Position the 2-stroke/4-stroke selector according to engine type. The left scale ("CHANNEL 1") can now be used to monitor engine speed from 500-2500 rpm with a scale resolution of 50 rpm per individual LED segment.
- Page 7 Finishing the job Once a satisfactory synchronisation has been achieved, switch over once again to the RPM function and reset the engine idling speed as required. Switch off the engine, disconnect the VacuumMate’s electrical input from the source and from the enclosure, and disconnect the pneumatic engine connections taking care not to burn your fingers ! The connection adapters and other accessories are best kept for safe-keeping together with the VacuumMate itself either in the custom travel case or, if you have a StandMate (see page 5), in the compartmentalised steel tray and instrument holder.
- Page 8 In DYN mode the waveform heights of each connected channel (cylinder) and the relative positions of their crests & troughs are displayed side by side for direct comparison. When all carburettors have been correctly synchronized and everything works normally, the bands should all have the same height and position.
- Page 9 EXAMPLE 1 : LEAK THROUGH EXHAUST VALVE OR INTAKE MANIFOLD The normal wave-form is shown in paler tone for comparison with the darker abnormal wave-form. EXAMPLE 2. INTAKE VALVE NOT CLOSING If one of the intake valves is not closing completely, it means that the combustion chamber is continuously connected with the intake system.
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Page 10: When To Calibrate
9. SERVICE Accidental immersion In case of accidental immersion in water retrieve the VacuumMate immediately and disconnect from any electrical input. Dry off the VacuumMate and blow out the DC power inlet using a hair dryer. Carefully remove the soft rubber sealing plug covering the calibration trimmers at the lower end of the VacuumMate and blow out the Damage to plug calibration cavity with a hair dryer. - Page 11 REPEAT THE WHOLE PROCEDURE at least once to recheck your adjustments. NOTE: In case of calibration or other difficulties, go to www.tecmate-int.com , click on “VacuumMate” for more details or on “Contact Us” then “Technical Questions” or “Service & Repairs” for further...
- Page 12 All consequential damages or liabilities arising from or claimed to arise from the use or misuse of the VacuumMate or any accessory are expressly excluded from this limited warranty which is the sole warranty recognised by the manufacturer TecMate (International) S.A. or his authorised distributors. Service: www.tecmate-int.com...
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