| 摘要 |
A tool for testing pressure/vacuum engine control switches includes a first and second housing. The housings each include inner and outer passages. The housings are attached with the inner passages placed adjacent each other. When attached, the housings form a continuous longitudinal passage. A pressure chamber is attached to the first housing and includes a valve. The valve provides a passage to a testing chamber. The testing chamber includes a receptacle, pressure/vacuum gauge, and a plug. The first housing also includes a vent and a piston/rod arrangement which define a fluid chamber in the first housing. The rod extends from the first housing through the inner passages and partially into the second housing. A seal is provided around the portion of the rod which passes through inner passages. A return spring is provided around the portion of the rod which extends into the second housing. A lock-and-swivel joint is located at the end of the portion of the rod extending into the second housing. A threaded rod is attached to the lock-and-swivel joint and extends through the outer passage of the second housing. An adjusting knob is provided at the end of the threaded rod outside of the second housing. Preferably, the second housing also includes a mechanism for mounting a battery. The mechanism may include two (or more) mounting plates extending perpendicular to the second housing such that a battery may be inserted and retained therebetween. Wires may be attached to respective mounting plates and be provided with clips at the ends thereof. A light bulb may be provided on one wire.
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