I've been handling parts orders for heavy equipment for about four years now. In that time, I've personally made (and documented) some pretty significant mistakes, totaling roughly $3,200 in wasted budget. The worst one? A $1,400 order of Terex TC35 parts where the local dealer and I weren't talking about the same machine. I said 'TC35.' They heard 'TC35-2.' Different final drive, different pump, different everything.
That was in September of 2022. After a third rejection for a simple fuel pump order in Q1 of 2024, I created a pre-check list for our team. We've caught 47 potential errors using it in the past 18 months. Here's the checklist, broken down by the six most common screw-ups I've made or seen other people make.
Who This Checklist Is For
This is for anyone who has to order parts for Terex equipment—excavators, loaders, cranes, whatever. If you're a mechanic, a shop foreman, or the guy in the office who gets handed a scrap of paper with a part number and told to 'figure it out,' this is for you. It's a six-step list. If you follow it, you'll save time and money. I promise you that.
The 6-Step Pre-Check List
Step 1: Verify the Machine Serial Number (Not Just the Model)
This is the one that got me with the TC35. The model number is not enough. Terex uses 'series' suffixes—TC35, TC35-2, TC35-3—and sometimes the year of manufacture changes the spec completely.
What I do now: I don't accept 'We have a 2008 TC35.' I ask for the serial number plate. On a crawler excavator, it's usually on the frame rail near the cab entry, or on a plate by the hydraulic tank. On a wheel loader, it's on the roll-over protection structure. Take a picture. Send it to the dealer or the parts guy. Don't ask for a price until they confirm that serial number matches the part.
Checkpoint: Serial number confirmed in both the parts system and the machine's physical plate. It took me 3 years and about 150 orders to understand that a model number alone is a gamble.
Step 2: Get the Exact Part Number from a Parts Manual or Online Breakdown
Don't guess based on what you see. 'Yeah, that looks like the fuel pump I need' is how you end up with a pump that has the wrong mounting flange. I ordered a fuel pump for a stand mixer once—I mean, not a Terex, but you get the idea. The description said 'heavy duty.' It wasn't.
What I do now: For Terex, I use the online parts lookup by serial number. If that's not available, I call the local dealer and say 'I need the part number for [Description] on Serial #[XXXXX].' They give me the number. I write it down. Then I confirm it against the TC35 parts manual PDF if I have one. Basically, I'm not 100% sure on the exact part number until I've cross-referenced it twice.
Checkpoint: Part number confirmed via serial number lookup e
Step 3: Check for Supercessions and Upgrades
This is a big one. The part number printed in a 2013 manual might not be the part you can buy today. Terex, like everyone, updates things. A '12345-A' pump might have been superseded by a '12345-B' that's actually better. Or the original part is discontinued and the only option is a kit.
What I do now: When the dealer gives me a part number, I flat-out ask, 'Is this the latest version? Are there any supersessions?' I also check online forums. A quick search for 'Terex TC35 fuel pump supersession' can save you a ton of hassle. A year ago, I ordered a bush kit for a Finlay crusher. I got the old part number. It was a different size. The dealer ate the return, but that was embarrassing.
Checkpoint: Confirmed no active supersessions for the part number.
Step 4: Verify Pricing and Availability—Then Double-Check
If a price seems too good to be true, it probably is. But sometimes the local dealer has a much better price than the online discounters, or vice versa. I've learned to ask 'what's NOT included' before 'what's the price.' On a major undercarriage order for a Terex excavator, the price from the local guy was lower than the online dealer, but the online dealer's price included shipping. The local guy? Not so much. It's a trade-off.
What I do now: I get a price from two sources minimum. I then ask both for the 'out-the-door' price with shipping, taxes, and any core charges. The $450 'savings' on the first quote vanished when the second quote showed a $250 shipping fee plus a $200 core charge. The vendor who lists all fees upfront—even if the total looks higher—usually costs less in the end.
Checkpoint: Out-the-door price from at least two sources. Total cost confirmed.
Step 5: Confirm the Shipping Address and Method
This sounds stupid, but I once sent a $2,200 Terex tumbler for a quarry crusher to an old job site address. It took three weeks to forward. The machine sat idle. That's more than a cost issue. That's a productivity issue.
What I do now: For the final confirmation email, I literally type the shipping address again in the body of the email. 'Confirm this is the shipping address: 123 Main Street, City, State, Zip.' I also specify the shipping method. 'Standard Ground' is not a method. 'UPS Ground' is. 'FedEx Express Saver' is. Don't be vague.
Checkpoint: Shipping address and method explicitly confirmed in writing.
Step 6: Visual Inspection on Delivery
I cannot stress this enough. Inspect the part before you sign the delivery receipt. Open the box. Pull out the pump. Look at it. Does it look new? Does it have any damage? Is it the same part you ordered? If the driver won't wait, take a video of you opening the box. Do not assume it's correct.
What I do now: I have a rule: 'No open box, no signing the paperwork.' I once ordered a boom lift part. The box looked fine. Inside was the wrong model. The lift sat for a week because the dealer blamed the shipper. I didn't have photo proof. Now I do. It's a pain in the neck sometimes, but it's saved us from accepting the wrong TC35 parts on two separate orders.
Checkpoint: Part visually inspected and confirmed correct before signing.
Two Things That Can Still Bite You
- Obsolete parts in the system: A part number might exist in the dealer's system but be physically unavailable. Always confirm 'in stock and available.'
- Shipping damage isn't always visible: A fuel pump may be fine cosmetically but damaged internally. If you suspect it, test it before you install it. A few minutes of testing can save a full day of install and rework.