[jes102471]

relief valve for a telsta a28D

I have a 1993 Telsta A28D and I need the relief valve. I no its a RV3 but not sure what the part number is or what pressure rating it is. Anyone have a manual on this that could help me out with the part number??

 

[Jcjc2323]

Can anyone send me pics of the 3 relays wiring on inside of gen housing. Pls. It's a a28d telsa with Onan gen. I have from lift controls. A red, black with Xtra leg so 2 blacks ik it's constant 12v+. I have a white and green. Green has 5 legs total it's ground. From gen plug. I have 3 wires. Black, yellow start and a brown stop. But I can't figure how to wire them back on the three 5 prong relays

 

[Jcjc2323]

Can anyone send me pics of the 3 relays wiring on inside of gen housing. Pls. It's a a28d telsa with Onan gen. I have from lift controls. A red, black with Xtra leg so 2 blacks ik it's constant 12v+. I have a white and green. Green has 5 legs total it's ground. From gen plug. I have 3 wires. Black, yellow start and a brown stop. But I can't figure how to wire them back on the three 5 prong relays

 

[Jcjc2323]

Hey guys new here! So my neighbor has 02 e350 with a28d lift cmm Onan 5.5 or 4.5 tag is gone but anyways. I had to change his belt on bottom of the gen. Well my smart self thought by putting elect tape around the 3 relays in gen housing would keep wires where they were. Well nope few of them came off. Long story short I decided to one of my smartest moves of all time removed all the wires bcuz I couldn't get the few that came lose n right spots. So after removing all them I thought no big deal. Well if I couldn't figure 3 wires WTH did I think I could figure out 12 connections. Anyways could some pls send me either pics or tell me how to jump the relays correctly. I have 5grn grounds 1red 1white 2black12+ and off gen pigtail I have yellow {start} brown {stop} and black {switched 12+}I have the schematics but hard to read n follow I don't know if they even contain the info I need thanks to anyone who can help me. I got to get this thing going asap he needs it bad and I have been working on it far to long

 

[Mark SJP]

I have a complete set of manuals which includes wiring schematics. I am a NIASE (I'm dating myself) certified mechanic and an accomplished Experimental aircraft builder, but these wiring flow charts for this truck are enough to make you drink. Anyways, I believe I found the problem. Looks as if a couple of the spade connectors in the main control box are compromised. I'll be taking digital photos of the connections and then systematically replacing all the connectors 1-by1. Must be over 100 in this box.

 

[Mark SJP]

Could I get a copy of your manuals for the A28 D Telsta bucket truck?

 

[raven9854]

Hello, I too am looking for the manual(s) for a Telsta A28D. Any help would be much appreciated. stuff@jeffmclowry.com

 

[2000chevy]

Hello, I have a 28d telsta, i was working fine for a while. Now a boom breaker in the box keeps tripping after it runs for about 1/2hour. Any ideals? Thank you in advance for any helps

 

[Williamthepainter]

Relay

You will need to find the wire in the tower that has power when the override switch is in normal posistion. This wire sends power up to your controls in the bucket. Due to power required to operate the solenoids when battery voltage is low as in emergency operation with 12v hyd pump running voltage drops to low for solenoids to function. This is caused by the resistance in the common power wire running from the tower to the rear of the van then back to the tower and up to the controls back down to the solenoids. By adding the relay in the tower you eliminate the resistance in the override circuit that causes the voltage drop. The relay will close upon the override switch activating, then the power circuit will be switched in the tower. You will have to meter this out and have electrical knowledge for this to work. I am assuming you have the a28d mounted on a van with the controls on the rear door if your having this voltage /control issue at the basket.

That is what is going on... but I am no electrician. Is there a way for you to dumb it down for me?

 

[smb]

Hello everyone and thank you for allowing me to visit your forums.

Recently I purchased a 1994 F-450 with a A28D Bucket on the back for the purpose of changing out light fixtures (under canopy / light poles) at my customers locations. Problem I'm having with my truck is that the controls on the boom are acting up intermittently. The controls down low in the right rear panel all work fine. The truck came with the complete TELSTA owners / service manual which includes a complete wiring schematic, but I'm still lost of where I should start.

Anyways, I was hoping to pick the brains of the guys that work on these trucks and maybe they will be able to steer me in the correct direction. I'm hoping that this is a common issue and that there is a common fix.

Thank you in advance for any and all help that is sent my way...

I have an A28D . Will you sell me a copy of the owners/service manual?
My ph no. is 765-617-8416

 

[50deuce85]

Can anyone can send me a copy of the wiring diagram for the Telsta A28 boom? My email is renownedsolutionsllc@gmail.com

 

[avenge]

Can anyone can send me a copy of the wiring diagram for the Telsta A28 boom? My email is renownedsolutionsllc@gmail.com

No all of you are you are posting on a 15 year old thread.

 

[50deuce85]

No all of you are you are posting on a 15 year old thread.

Yeah , I saw that but thought I'd take my chances. Thanks